diff --git a/UPGRADE-6.1.md b/UPGRADE-6.1.md
index 4800052c2620..70d78fd7cc97 100644
--- a/UPGRADE-6.1.md
+++ b/UPGRADE-6.1.md
@@ -13,3 +13,8 @@ Serializer
  * Deprecate `ContextAwareDenormalizerInterface`, use `DenormalizerInterface` instead
  * Deprecate `ContextAwareEncoderInterface`, use `EncoderInterface` instead
  * Deprecate `ContextAwareDecoderInterface`, use `DecoderInterface` instead
+
+Validator
+---------
+
+ * Deprecate `Constraint::$errorNames`, use `Constraint::ERROR_NAMES` instead
diff --git a/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntity.php b/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntity.php
index ebfd5e62046d..7d65c898ccb4 100644
--- a/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntity.php
+++ b/src/Symfony/Bridge/Doctrine/Validator/Constraints/UniqueEntity.php
@@ -26,6 +26,10 @@ class UniqueEntity extends Constraint
 {
     public const NOT_UNIQUE_ERROR = '23bd9dbf-6b9b-41cd-a99e-4844bcf3077f';
 
+    protected const ERROR_NAMES = [
+        self::NOT_UNIQUE_ERROR => 'NOT_UNIQUE_ERROR',
+    ];
+
     public $message = 'This value is already used.';
     public $service = 'doctrine.orm.validator.unique';
     public $em = null;
@@ -35,9 +39,10 @@ class UniqueEntity extends Constraint
     public $errorPath = null;
     public $ignoreNull = true;
 
-    protected static $errorNames = [
-        self::NOT_UNIQUE_ERROR => 'NOT_UNIQUE_ERROR',
-    ];
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
 
     /**
      * {@inheritdoc}
diff --git a/src/Symfony/Component/Form/Extension/Validator/Constraints/Form.php b/src/Symfony/Component/Form/Extension/Validator/Constraints/Form.php
index 714ef312dcb7..694281ddd123 100644
--- a/src/Symfony/Component/Form/Extension/Validator/Constraints/Form.php
+++ b/src/Symfony/Component/Form/Extension/Validator/Constraints/Form.php
@@ -21,11 +21,16 @@ class Form extends Constraint
     public const NOT_SYNCHRONIZED_ERROR = '1dafa156-89e1-4736-b832-419c2e501fca';
     public const NO_SUCH_FIELD_ERROR = '6e5212ed-a197-4339-99aa-5654798a4854';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NOT_SYNCHRONIZED_ERROR => 'NOT_SYNCHRONIZED_ERROR',
         self::NO_SUCH_FIELD_ERROR => 'NO_SUCH_FIELD_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     /**
      * {@inheritdoc}
      */
diff --git a/src/Symfony/Component/Validator/CHANGELOG.md b/src/Symfony/Component/Validator/CHANGELOG.md
index 1a095ee6fe9e..85baf4340c12 100644
--- a/src/Symfony/Component/Validator/CHANGELOG.md
+++ b/src/Symfony/Component/Validator/CHANGELOG.md
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+6.1
+---
+
+ * Deprecate `Constraint::$errorNames`, use `Constraint::ERROR_NAMES` instead
+
 6.0
 ---
 
diff --git a/src/Symfony/Component/Validator/Constraint.php b/src/Symfony/Component/Validator/Constraint.php
index 46432f2f4c60..ee1d68c78f50 100644
--- a/src/Symfony/Component/Validator/Constraint.php
+++ b/src/Symfony/Component/Validator/Constraint.php
@@ -47,6 +47,11 @@ abstract class Constraint
     /**
      * Maps error codes to the names of their constants.
      */
+    protected const ERROR_NAMES = [];
+
+    /**
+     * @deprecated since Symfony 6.1, use protected const ERROR_NAMES instead
+     */
     protected static $errorNames = [];
 
     /**
@@ -70,10 +75,16 @@ abstract class Constraint
      */
     public static function getErrorName(string $errorCode): string
     {
+        if (isset(static::ERROR_NAMES[$errorCode])) {
+            return static::ERROR_NAMES[$errorCode];
+        }
+
         if (!isset(static::$errorNames[$errorCode])) {
             throw new InvalidArgumentException(sprintf('The error code "%s" does not exist for constraint of type "%s".', $errorCode, static::class));
         }
 
+        trigger_deprecation('symfony/validator', '6.1', 'The "%s::$errorNames" property is deprecated, use protected const ERROR_NAMES instead.', static::class);
+
         return static::$errorNames[$errorCode];
     }
 
diff --git a/src/Symfony/Component/Validator/Constraints/AtLeastOneOf.php b/src/Symfony/Component/Validator/Constraints/AtLeastOneOf.php
index 5eb67535e925..33ed343af7ae 100644
--- a/src/Symfony/Component/Validator/Constraints/AtLeastOneOf.php
+++ b/src/Symfony/Component/Validator/Constraints/AtLeastOneOf.php
@@ -22,10 +22,15 @@ class AtLeastOneOf extends Composite
 {
     public const AT_LEAST_ONE_OF_ERROR = 'f27e6d6c-261a-4056-b391-6673a623531c';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::AT_LEAST_ONE_OF_ERROR => 'AT_LEAST_ONE_OF_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $constraints = [];
     public $message = 'This value should satisfy at least one of the following constraints:';
     public $messageCollection = 'Each element of this collection should satisfy its own set of constraints.';
diff --git a/src/Symfony/Component/Validator/Constraints/Bic.php b/src/Symfony/Component/Validator/Constraints/Bic.php
index 7e871be9c50c..36ec3436df34 100644
--- a/src/Symfony/Component/Validator/Constraints/Bic.php
+++ b/src/Symfony/Component/Validator/Constraints/Bic.php
@@ -33,7 +33,7 @@ class Bic extends Constraint
     public const INVALID_CASE_ERROR = '11884038-3312-4ae5-9d04-699f782130c7';
     public const INVALID_IBAN_COUNTRY_CODE_ERROR = '29a2c3bb-587b-4996-b6f5-53081364cea5';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_LENGTH_ERROR => 'INVALID_LENGTH_ERROR',
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
         self::INVALID_BANK_CODE_ERROR => 'INVALID_BANK_CODE_ERROR',
@@ -41,6 +41,11 @@ class Bic extends Constraint
         self::INVALID_CASE_ERROR => 'INVALID_CASE_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This is not a valid Business Identifier Code (BIC).';
     public $ibanMessage = 'This Business Identifier Code (BIC) is not associated with IBAN {{ iban }}.';
     public $iban;
diff --git a/src/Symfony/Component/Validator/Constraints/Blank.php b/src/Symfony/Component/Validator/Constraints/Blank.php
index d4d320999919..bd28e68bc81f 100644
--- a/src/Symfony/Component/Validator/Constraints/Blank.php
+++ b/src/Symfony/Component/Validator/Constraints/Blank.php
@@ -24,10 +24,15 @@ class Blank extends Constraint
 {
     public const NOT_BLANK_ERROR = '183ad2de-533d-4796-a439-6d3c3852b549';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NOT_BLANK_ERROR => 'NOT_BLANK_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should be blank.';
 
     public function __construct(array $options = null, string $message = null, array $groups = null, mixed $payload = null)
diff --git a/src/Symfony/Component/Validator/Constraints/CardScheme.php b/src/Symfony/Component/Validator/Constraints/CardScheme.php
index 095019d4d435..067024769aea 100644
--- a/src/Symfony/Component/Validator/Constraints/CardScheme.php
+++ b/src/Symfony/Component/Validator/Constraints/CardScheme.php
@@ -41,11 +41,16 @@ class CardScheme extends Constraint
     public const NOT_NUMERIC_ERROR = 'a2ad9231-e827-485f-8a1e-ef4d9a6d5c2e';
     public const INVALID_FORMAT_ERROR = 'a8faedbf-1c2f-4695-8d22-55783be8efed';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NOT_NUMERIC_ERROR => 'NOT_NUMERIC_ERROR',
         self::INVALID_FORMAT_ERROR => 'INVALID_FORMAT_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'Unsupported card type or invalid card number.';
     public $schemes;
 
diff --git a/src/Symfony/Component/Validator/Constraints/Choice.php b/src/Symfony/Component/Validator/Constraints/Choice.php
index 31691d4b90c1..282366603a8e 100644
--- a/src/Symfony/Component/Validator/Constraints/Choice.php
+++ b/src/Symfony/Component/Validator/Constraints/Choice.php
@@ -26,12 +26,17 @@ class Choice extends Constraint
     public const TOO_FEW_ERROR = '11edd7eb-5872-4b6e-9f12-89923999fd0e';
     public const TOO_MANY_ERROR = '9bd98e49-211c-433f-8630-fd1c2d0f08c3';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NO_SUCH_CHOICE_ERROR => 'NO_SUCH_CHOICE_ERROR',
         self::TOO_FEW_ERROR => 'TOO_FEW_ERROR',
         self::TOO_MANY_ERROR => 'TOO_MANY_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $choices;
     public $callback;
     public $multiple = false;
diff --git a/src/Symfony/Component/Validator/Constraints/Cidr.php b/src/Symfony/Component/Validator/Constraints/Cidr.php
index 387c5996a053..c40669e824db 100644
--- a/src/Symfony/Component/Validator/Constraints/Cidr.php
+++ b/src/Symfony/Component/Validator/Constraints/Cidr.php
@@ -29,7 +29,7 @@ class Cidr extends Constraint
     public const INVALID_CIDR_ERROR = '5649e53a-5afb-47c5-a360-ffbab3be8567';
     public const OUT_OF_RANGE_ERROR = 'b9f14a51-acbd-401a-a078-8c6b204ab32f';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_CIDR_ERROR => 'INVALID_CIDR_ERROR',
         self::OUT_OF_RANGE_ERROR => 'OUT_OF_RANGE_VIOLATION',
     ];
@@ -40,6 +40,11 @@ class Cidr extends Constraint
         Ip::V6 => 128,
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $version = Ip::ALL;
 
     public $message = 'This value is not a valid CIDR notation.';
diff --git a/src/Symfony/Component/Validator/Constraints/Collection.php b/src/Symfony/Component/Validator/Constraints/Collection.php
index 42800e35c9df..89515960324b 100644
--- a/src/Symfony/Component/Validator/Constraints/Collection.php
+++ b/src/Symfony/Component/Validator/Constraints/Collection.php
@@ -25,11 +25,16 @@ class Collection extends Composite
     public const MISSING_FIELD_ERROR = '2fa2158c-2a7f-484b-98aa-975522539ff8';
     public const NO_SUCH_FIELD_ERROR = '7703c766-b5d5-4cef-ace7-ae0dd82304e9';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::MISSING_FIELD_ERROR => 'MISSING_FIELD_ERROR',
         self::NO_SUCH_FIELD_ERROR => 'NO_SUCH_FIELD_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $fields = [];
     public $allowExtraFields = false;
     public $allowMissingFields = false;
diff --git a/src/Symfony/Component/Validator/Constraints/Count.php b/src/Symfony/Component/Validator/Constraints/Count.php
index f8ffc3750efa..ea5d4182865d 100644
--- a/src/Symfony/Component/Validator/Constraints/Count.php
+++ b/src/Symfony/Component/Validator/Constraints/Count.php
@@ -28,13 +28,18 @@ class Count extends Constraint
     public const NOT_EQUAL_COUNT_ERROR = '9fe5d43f-3784-4ece-a0e1-473fc02dadbc';
     public const NOT_DIVISIBLE_BY_ERROR = DivisibleBy::NOT_DIVISIBLE_BY;
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::TOO_FEW_ERROR => 'TOO_FEW_ERROR',
         self::TOO_MANY_ERROR => 'TOO_MANY_ERROR',
         self::NOT_EQUAL_COUNT_ERROR => 'NOT_EQUAL_COUNT_ERROR',
         self::NOT_DIVISIBLE_BY_ERROR => 'NOT_DIVISIBLE_BY_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $minMessage = 'This collection should contain {{ limit }} element or more.|This collection should contain {{ limit }} elements or more.';
     public $maxMessage = 'This collection should contain {{ limit }} element or less.|This collection should contain {{ limit }} elements or less.';
     public $exactMessage = 'This collection should contain exactly {{ limit }} element.|This collection should contain exactly {{ limit }} elements.';
diff --git a/src/Symfony/Component/Validator/Constraints/Country.php b/src/Symfony/Component/Validator/Constraints/Country.php
index 5493da4e65cf..03df0206bbed 100644
--- a/src/Symfony/Component/Validator/Constraints/Country.php
+++ b/src/Symfony/Component/Validator/Constraints/Country.php
@@ -26,10 +26,15 @@ class Country extends Constraint
 {
     public const NO_SUCH_COUNTRY_ERROR = '8f900c12-61bd-455d-9398-996cd040f7f0';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NO_SUCH_COUNTRY_ERROR => 'NO_SUCH_COUNTRY_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value is not a valid country.';
     public $alpha3 = false;
 
diff --git a/src/Symfony/Component/Validator/Constraints/CssColor.php b/src/Symfony/Component/Validator/Constraints/CssColor.php
index e1510dafe38f..d1e2e2783430 100644
--- a/src/Symfony/Component/Validator/Constraints/CssColor.php
+++ b/src/Symfony/Component/Validator/Constraints/CssColor.php
@@ -37,10 +37,15 @@ class CssColor extends Constraint
     public const HSLA = 'hsla';
     public const INVALID_FORMAT_ERROR = '454ab47b-aacf-4059-8f26-184b2dc9d48d';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_FORMAT_ERROR => 'INVALID_FORMAT_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     /**
      * @var string[]
      */
diff --git a/src/Symfony/Component/Validator/Constraints/Currency.php b/src/Symfony/Component/Validator/Constraints/Currency.php
index d143ee0e72fe..5713d803e8cd 100644
--- a/src/Symfony/Component/Validator/Constraints/Currency.php
+++ b/src/Symfony/Component/Validator/Constraints/Currency.php
@@ -27,10 +27,15 @@ class Currency extends Constraint
 {
     public const NO_SUCH_CURRENCY_ERROR = '69945ac1-2db4-405f-bec7-d2772f73df52';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NO_SUCH_CURRENCY_ERROR => 'NO_SUCH_CURRENCY_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value is not a valid currency.';
 
     public function __construct(array $options = null, string $message = null, array $groups = null, mixed $payload = null)
diff --git a/src/Symfony/Component/Validator/Constraints/Date.php b/src/Symfony/Component/Validator/Constraints/Date.php
index ed4014b40768..1ca3bee11f35 100644
--- a/src/Symfony/Component/Validator/Constraints/Date.php
+++ b/src/Symfony/Component/Validator/Constraints/Date.php
@@ -25,11 +25,16 @@ class Date extends Constraint
     public const INVALID_FORMAT_ERROR = '69819696-02ac-4a99-9ff0-14e127c4d1bc';
     public const INVALID_DATE_ERROR = '3c184ce5-b31d-4de7-8b76-326da7b2be93';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_FORMAT_ERROR => 'INVALID_FORMAT_ERROR',
         self::INVALID_DATE_ERROR => 'INVALID_DATE_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value is not a valid date.';
 
     public function __construct(array $options = null, string $message = null, array $groups = null, mixed $payload = null)
diff --git a/src/Symfony/Component/Validator/Constraints/DateTime.php b/src/Symfony/Component/Validator/Constraints/DateTime.php
index 514717dada0e..f187f8b26685 100644
--- a/src/Symfony/Component/Validator/Constraints/DateTime.php
+++ b/src/Symfony/Component/Validator/Constraints/DateTime.php
@@ -26,12 +26,17 @@ class DateTime extends Constraint
     public const INVALID_DATE_ERROR = 'd52afa47-620d-4d99-9f08-f4d85b36e33c';
     public const INVALID_TIME_ERROR = '5e797c9d-74f7-4098-baa3-94390c447b27';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_FORMAT_ERROR => 'INVALID_FORMAT_ERROR',
         self::INVALID_DATE_ERROR => 'INVALID_DATE_ERROR',
         self::INVALID_TIME_ERROR => 'INVALID_TIME_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $format = 'Y-m-d H:i:s';
     public $message = 'This value is not a valid datetime.';
 
diff --git a/src/Symfony/Component/Validator/Constraints/DivisibleBy.php b/src/Symfony/Component/Validator/Constraints/DivisibleBy.php
index d3f5cd713ad1..90164aab286b 100644
--- a/src/Symfony/Component/Validator/Constraints/DivisibleBy.php
+++ b/src/Symfony/Component/Validator/Constraints/DivisibleBy.php
@@ -22,9 +22,14 @@ class DivisibleBy extends AbstractComparison
 {
     public const NOT_DIVISIBLE_BY = '6d99d6c3-1464-4ccf-bdc7-14d083cf455c';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NOT_DIVISIBLE_BY => 'NOT_DIVISIBLE_BY',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should be a multiple of {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Email.php b/src/Symfony/Component/Validator/Constraints/Email.php
index 63968dc9ce35..a0b7a2e9c3f8 100644
--- a/src/Symfony/Component/Validator/Constraints/Email.php
+++ b/src/Symfony/Component/Validator/Constraints/Email.php
@@ -37,10 +37,15 @@ class Email extends Constraint
         self::VALIDATION_MODE_LOOSE,
     ];
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_FORMAT_ERROR => 'STRICT_CHECK_FAILED_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value is not a valid email address.';
     public $mode;
     public $normalizer;
diff --git a/src/Symfony/Component/Validator/Constraints/EqualTo.php b/src/Symfony/Component/Validator/Constraints/EqualTo.php
index 09ab4f0f52d9..03769ce8a84a 100644
--- a/src/Symfony/Component/Validator/Constraints/EqualTo.php
+++ b/src/Symfony/Component/Validator/Constraints/EqualTo.php
@@ -23,9 +23,14 @@ class EqualTo extends AbstractComparison
 {
     public const NOT_EQUAL_ERROR = '478618a7-95ba-473d-9101-cabd45e49115';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NOT_EQUAL_ERROR => 'NOT_EQUAL_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should be equal to {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Expression.php b/src/Symfony/Component/Validator/Constraints/Expression.php
index 6bddca317a96..19c4cb54d665 100644
--- a/src/Symfony/Component/Validator/Constraints/Expression.php
+++ b/src/Symfony/Component/Validator/Constraints/Expression.php
@@ -28,10 +28,15 @@ class Expression extends Constraint
 {
     public const EXPRESSION_FAILED_ERROR = '6b3befbc-2f01-4ddf-be21-b57898905284';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::EXPRESSION_FAILED_ERROR => 'EXPRESSION_FAILED_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value is not valid.';
     public $expression;
     public $values = [];
diff --git a/src/Symfony/Component/Validator/Constraints/ExpressionLanguageSyntax.php b/src/Symfony/Component/Validator/Constraints/ExpressionLanguageSyntax.php
index f370cf01b352..dda1e5be78cd 100644
--- a/src/Symfony/Component/Validator/Constraints/ExpressionLanguageSyntax.php
+++ b/src/Symfony/Component/Validator/Constraints/ExpressionLanguageSyntax.php
@@ -24,10 +24,15 @@ class ExpressionLanguageSyntax extends Constraint
 {
     public const EXPRESSION_LANGUAGE_SYNTAX_ERROR = '1766a3f3-ff03-40eb-b053-ab7aa23d988a';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::EXPRESSION_LANGUAGE_SYNTAX_ERROR => 'EXPRESSION_LANGUAGE_SYNTAX_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should be a valid expression.';
     public $service;
     public $allowedVariables;
diff --git a/src/Symfony/Component/Validator/Constraints/File.php b/src/Symfony/Component/Validator/Constraints/File.php
index e81618e71e32..577f9ed3d6f6 100644
--- a/src/Symfony/Component/Validator/Constraints/File.php
+++ b/src/Symfony/Component/Validator/Constraints/File.php
@@ -33,7 +33,7 @@ class File extends Constraint
     public const TOO_LARGE_ERROR = 'df8637af-d466-48c6-a59d-e7126250a654';
     public const INVALID_MIME_TYPE_ERROR = '744f00bc-4389-4c74-92de-9a43cde55534';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NOT_FOUND_ERROR => 'NOT_FOUND_ERROR',
         self::NOT_READABLE_ERROR => 'NOT_READABLE_ERROR',
         self::EMPTY_ERROR => 'EMPTY_ERROR',
@@ -41,6 +41,11 @@ class File extends Constraint
         self::INVALID_MIME_TYPE_ERROR => 'INVALID_MIME_TYPE_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $binaryFormat;
     public $mimeTypes = [];
     public $notFoundMessage = 'The file could not be found.';
diff --git a/src/Symfony/Component/Validator/Constraints/GreaterThan.php b/src/Symfony/Component/Validator/Constraints/GreaterThan.php
index 41648752a2f3..ce56f1ac1c81 100644
--- a/src/Symfony/Component/Validator/Constraints/GreaterThan.php
+++ b/src/Symfony/Component/Validator/Constraints/GreaterThan.php
@@ -23,9 +23,14 @@ class GreaterThan extends AbstractComparison
 {
     public const TOO_LOW_ERROR = '778b7ae0-84d3-481a-9dec-35fdb64b1d78';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::TOO_LOW_ERROR => 'TOO_LOW_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should be greater than {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/GreaterThanOrEqual.php b/src/Symfony/Component/Validator/Constraints/GreaterThanOrEqual.php
index 86ff44e8c343..c962f7964f4b 100644
--- a/src/Symfony/Component/Validator/Constraints/GreaterThanOrEqual.php
+++ b/src/Symfony/Component/Validator/Constraints/GreaterThanOrEqual.php
@@ -23,9 +23,14 @@ class GreaterThanOrEqual extends AbstractComparison
 {
     public const TOO_LOW_ERROR = 'ea4e51d1-3342-48bd-87f1-9e672cd90cad';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::TOO_LOW_ERROR => 'TOO_LOW_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should be greater than or equal to {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Hostname.php b/src/Symfony/Component/Validator/Constraints/Hostname.php
index 3fe57f4ae6ea..cbf33cd8d027 100644
--- a/src/Symfony/Component/Validator/Constraints/Hostname.php
+++ b/src/Symfony/Component/Validator/Constraints/Hostname.php
@@ -24,10 +24,15 @@ class Hostname extends Constraint
 {
     public const INVALID_HOSTNAME_ERROR = '7057ffdb-0af4-4f7e-bd5e-e9acfa6d7a2d';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_HOSTNAME_ERROR => 'INVALID_HOSTNAME_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value is not a valid hostname.';
     public $requireTld = true;
 
diff --git a/src/Symfony/Component/Validator/Constraints/Iban.php b/src/Symfony/Component/Validator/Constraints/Iban.php
index 06b07fc7211a..684df2e561e5 100644
--- a/src/Symfony/Component/Validator/Constraints/Iban.php
+++ b/src/Symfony/Component/Validator/Constraints/Iban.php
@@ -30,7 +30,7 @@ class Iban extends Constraint
     public const INVALID_FORMAT_ERROR = 'c8d318f1-2ecc-41ba-b983-df70d225cf5a';
     public const NOT_SUPPORTED_COUNTRY_CODE_ERROR = 'e2c259f3-4b46-48e6-b72e-891658158ec8';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_COUNTRY_CODE_ERROR => 'INVALID_COUNTRY_CODE_ERROR',
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
         self::CHECKSUM_FAILED_ERROR => 'CHECKSUM_FAILED_ERROR',
@@ -38,6 +38,11 @@ class Iban extends Constraint
         self::NOT_SUPPORTED_COUNTRY_CODE_ERROR => 'NOT_SUPPORTED_COUNTRY_CODE_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This is not a valid International Bank Account Number (IBAN).';
 
     public function __construct(array $options = null, string $message = null, array $groups = null, mixed $payload = null)
diff --git a/src/Symfony/Component/Validator/Constraints/IdenticalTo.php b/src/Symfony/Component/Validator/Constraints/IdenticalTo.php
index b3d6b92cba7e..50ec5e1297a1 100644
--- a/src/Symfony/Component/Validator/Constraints/IdenticalTo.php
+++ b/src/Symfony/Component/Validator/Constraints/IdenticalTo.php
@@ -23,9 +23,14 @@ class IdenticalTo extends AbstractComparison
 {
     public const NOT_IDENTICAL_ERROR = '2a8cc50f-58a2-4536-875e-060a2ce69ed5';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NOT_IDENTICAL_ERROR => 'NOT_IDENTICAL_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should be identical to {{ compared_value_type }} {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Image.php b/src/Symfony/Component/Validator/Constraints/Image.php
index 3497ce4064ac..8a0a2cef6f95 100644
--- a/src/Symfony/Component/Validator/Constraints/Image.php
+++ b/src/Symfony/Component/Validator/Constraints/Image.php
@@ -37,7 +37,7 @@ class Image extends File
 
     // Include the mapping from the base class
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NOT_FOUND_ERROR => 'NOT_FOUND_ERROR',
         self::NOT_READABLE_ERROR => 'NOT_READABLE_ERROR',
         self::EMPTY_ERROR => 'EMPTY_ERROR',
@@ -58,6 +58,11 @@ class Image extends File
         self::CORRUPTED_IMAGE_ERROR => 'CORRUPTED_IMAGE_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $mimeTypes = 'image/*';
     public $minWidth;
     public $maxWidth;
diff --git a/src/Symfony/Component/Validator/Constraints/Ip.php b/src/Symfony/Component/Validator/Constraints/Ip.php
index a58d9b2d74e4..69a73a700e77 100644
--- a/src/Symfony/Component/Validator/Constraints/Ip.php
+++ b/src/Symfony/Component/Validator/Constraints/Ip.php
@@ -48,7 +48,7 @@ class Ip extends Constraint
 
     public const INVALID_IP_ERROR = 'b1b427ae-9f6f-41b0-aa9b-84511fbb3c5b';
 
-    protected static $versions = [
+    protected const VERSIONS = [
         self::V4,
         self::V6,
         self::ALL,
@@ -66,10 +66,20 @@ class Ip extends Constraint
         self::ALL_ONLY_PUBLIC,
     ];
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_IP_ERROR => 'INVALID_IP_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const VERSIONS instead
+     */
+    protected static $versions = self::VERSIONS;
+
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $version = self::V4;
 
     public $message = 'This is not a valid IP address.';
diff --git a/src/Symfony/Component/Validator/Constraints/IsFalse.php b/src/Symfony/Component/Validator/Constraints/IsFalse.php
index 0611426083f8..26042e2ee12b 100644
--- a/src/Symfony/Component/Validator/Constraints/IsFalse.php
+++ b/src/Symfony/Component/Validator/Constraints/IsFalse.php
@@ -24,10 +24,15 @@ class IsFalse extends Constraint
 {
     public const NOT_FALSE_ERROR = 'd53a91b0-def3-426a-83d7-269da7ab4200';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NOT_FALSE_ERROR => 'NOT_FALSE_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should be false.';
 
     public function __construct(array $options = null, string $message = null, array $groups = null, mixed $payload = null)
diff --git a/src/Symfony/Component/Validator/Constraints/IsNull.php b/src/Symfony/Component/Validator/Constraints/IsNull.php
index 62023848bf6d..5084c268a1d7 100644
--- a/src/Symfony/Component/Validator/Constraints/IsNull.php
+++ b/src/Symfony/Component/Validator/Constraints/IsNull.php
@@ -24,10 +24,15 @@ class IsNull extends Constraint
 {
     public const NOT_NULL_ERROR = '60d2f30b-8cfa-4372-b155-9656634de120';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NOT_NULL_ERROR => 'NOT_NULL_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should be null.';
 
     public function __construct(array $options = null, string $message = null, array $groups = null, mixed $payload = null)
diff --git a/src/Symfony/Component/Validator/Constraints/IsTrue.php b/src/Symfony/Component/Validator/Constraints/IsTrue.php
index 080cd61b1c8a..8ee9f729d04d 100644
--- a/src/Symfony/Component/Validator/Constraints/IsTrue.php
+++ b/src/Symfony/Component/Validator/Constraints/IsTrue.php
@@ -24,10 +24,15 @@ class IsTrue extends Constraint
 {
     public const NOT_TRUE_ERROR = '2beabf1c-54c0-4882-a928-05249b26e23b';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NOT_TRUE_ERROR => 'NOT_TRUE_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should be true.';
 
     public function __construct(array $options = null, string $message = null, array $groups = null, mixed $payload = null)
diff --git a/src/Symfony/Component/Validator/Constraints/Isbn.php b/src/Symfony/Component/Validator/Constraints/Isbn.php
index 7375647937e7..41110da1b4e0 100644
--- a/src/Symfony/Component/Validator/Constraints/Isbn.php
+++ b/src/Symfony/Component/Validator/Constraints/Isbn.php
@@ -33,7 +33,7 @@ class Isbn extends Constraint
     public const CHECKSUM_FAILED_ERROR = '2881c032-660f-46b6-8153-d352d9706640';
     public const TYPE_NOT_RECOGNIZED_ERROR = 'fa54a457-f042-441f-89c4-066ee5bdd3e1';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::TOO_SHORT_ERROR => 'TOO_SHORT_ERROR',
         self::TOO_LONG_ERROR => 'TOO_LONG_ERROR',
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
@@ -41,6 +41,11 @@ class Isbn extends Constraint
         self::TYPE_NOT_RECOGNIZED_ERROR => 'TYPE_NOT_RECOGNIZED_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $isbn10Message = 'This value is not a valid ISBN-10.';
     public $isbn13Message = 'This value is not a valid ISBN-13.';
     public $bothIsbnMessage = 'This value is neither a valid ISBN-10 nor a valid ISBN-13.';
diff --git a/src/Symfony/Component/Validator/Constraints/Isin.php b/src/Symfony/Component/Validator/Constraints/Isin.php
index 99113ddc2744..1522044befa8 100644
--- a/src/Symfony/Component/Validator/Constraints/Isin.php
+++ b/src/Symfony/Component/Validator/Constraints/Isin.php
@@ -29,12 +29,17 @@ class Isin extends Constraint
     public const INVALID_PATTERN_ERROR = '3d08ce0-ded9-a93d-9216-17ac21265b65e';
     public const INVALID_CHECKSUM_ERROR = '32089b-0ee1-93ba-399e-aa232e62f2d29d';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_LENGTH_ERROR => 'INVALID_LENGTH_ERROR',
         self::INVALID_PATTERN_ERROR => 'INVALID_PATTERN_ERROR',
         self::INVALID_CHECKSUM_ERROR => 'INVALID_CHECKSUM_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value is not a valid International Securities Identification Number (ISIN).';
 
     public function __construct(array $options = null, string $message = null, array $groups = null, mixed $payload = null)
diff --git a/src/Symfony/Component/Validator/Constraints/Issn.php b/src/Symfony/Component/Validator/Constraints/Issn.php
index d0ccb44997f8..a11f022e63e1 100644
--- a/src/Symfony/Component/Validator/Constraints/Issn.php
+++ b/src/Symfony/Component/Validator/Constraints/Issn.php
@@ -30,7 +30,7 @@ class Issn extends Constraint
     public const INVALID_CASE_ERROR = '7b6dd393-7523-4a6c-b84d-72b91bba5e1a';
     public const CHECKSUM_FAILED_ERROR = 'b0f92dbc-667c-48de-b526-ad9586d43e85';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::TOO_SHORT_ERROR => 'TOO_SHORT_ERROR',
         self::TOO_LONG_ERROR => 'TOO_LONG_ERROR',
         self::MISSING_HYPHEN_ERROR => 'MISSING_HYPHEN_ERROR',
@@ -39,6 +39,11 @@ class Issn extends Constraint
         self::CHECKSUM_FAILED_ERROR => 'CHECKSUM_FAILED_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value is not a valid ISSN.';
     public $caseSensitive = false;
     public $requireHyphen = false;
diff --git a/src/Symfony/Component/Validator/Constraints/Json.php b/src/Symfony/Component/Validator/Constraints/Json.php
index 7e79cd1ba8c9..f2826d28e39b 100644
--- a/src/Symfony/Component/Validator/Constraints/Json.php
+++ b/src/Symfony/Component/Validator/Constraints/Json.php
@@ -24,10 +24,15 @@ class Json extends Constraint
 {
     public const INVALID_JSON_ERROR = '0789c8ad-2d2b-49a4-8356-e2ce63998504';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_JSON_ERROR => 'INVALID_JSON_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should be valid JSON.';
 
     public function __construct(array $options = null, string $message = null, array $groups = null, mixed $payload = null)
diff --git a/src/Symfony/Component/Validator/Constraints/Language.php b/src/Symfony/Component/Validator/Constraints/Language.php
index f8b622964fbb..e3c2ce9629dd 100644
--- a/src/Symfony/Component/Validator/Constraints/Language.php
+++ b/src/Symfony/Component/Validator/Constraints/Language.php
@@ -26,10 +26,15 @@ class Language extends Constraint
 {
     public const NO_SUCH_LANGUAGE_ERROR = 'ee65fec4-9a20-4202-9f39-ca558cd7bdf7';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NO_SUCH_LANGUAGE_ERROR => 'NO_SUCH_LANGUAGE_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value is not a valid language.';
     public $alpha3 = false;
 
diff --git a/src/Symfony/Component/Validator/Constraints/Length.php b/src/Symfony/Component/Validator/Constraints/Length.php
index 65baba27d7f7..a25bf520ea60 100644
--- a/src/Symfony/Component/Validator/Constraints/Length.php
+++ b/src/Symfony/Component/Validator/Constraints/Length.php
@@ -29,13 +29,18 @@ class Length extends Constraint
     public const NOT_EQUAL_LENGTH_ERROR = '4b6f5c76-22b4-409d-af16-fbe823ba9332';
     public const INVALID_CHARACTERS_ERROR = '35e6a710-aa2e-4719-b58e-24b35749b767';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::TOO_SHORT_ERROR => 'TOO_SHORT_ERROR',
         self::TOO_LONG_ERROR => 'TOO_LONG_ERROR',
         self::NOT_EQUAL_LENGTH_ERROR => 'NOT_EQUAL_LENGTH_ERROR',
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $maxMessage = 'This value is too long. It should have {{ limit }} character or less.|This value is too long. It should have {{ limit }} characters or less.';
     public $minMessage = 'This value is too short. It should have {{ limit }} character or more.|This value is too short. It should have {{ limit }} characters or more.';
     public $exactMessage = 'This value should have exactly {{ limit }} character.|This value should have exactly {{ limit }} characters.';
diff --git a/src/Symfony/Component/Validator/Constraints/LessThan.php b/src/Symfony/Component/Validator/Constraints/LessThan.php
index acd6c9e66ffc..cf4144d6d26d 100644
--- a/src/Symfony/Component/Validator/Constraints/LessThan.php
+++ b/src/Symfony/Component/Validator/Constraints/LessThan.php
@@ -23,9 +23,14 @@ class LessThan extends AbstractComparison
 {
     public const TOO_HIGH_ERROR = '079d7420-2d13-460c-8756-de810eeb37d2';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::TOO_HIGH_ERROR => 'TOO_HIGH_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should be less than {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/LessThanOrEqual.php b/src/Symfony/Component/Validator/Constraints/LessThanOrEqual.php
index 6f7284594070..84e31abfc021 100644
--- a/src/Symfony/Component/Validator/Constraints/LessThanOrEqual.php
+++ b/src/Symfony/Component/Validator/Constraints/LessThanOrEqual.php
@@ -23,9 +23,14 @@ class LessThanOrEqual extends AbstractComparison
 {
     public const TOO_HIGH_ERROR = '30fbb013-d015-4232-8b3b-8f3be97a7e14';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::TOO_HIGH_ERROR => 'TOO_HIGH_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should be less than or equal to {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/Locale.php b/src/Symfony/Component/Validator/Constraints/Locale.php
index af0d54b3b21c..30f0ffd6eb30 100644
--- a/src/Symfony/Component/Validator/Constraints/Locale.php
+++ b/src/Symfony/Component/Validator/Constraints/Locale.php
@@ -26,10 +26,15 @@ class Locale extends Constraint
 {
     public const NO_SUCH_LOCALE_ERROR = 'a0af4293-1f1a-4a1c-a328-979cba6182a2';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::NO_SUCH_LOCALE_ERROR => 'NO_SUCH_LOCALE_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value is not a valid locale.';
     public $canonicalize = true;
 
diff --git a/src/Symfony/Component/Validator/Constraints/Luhn.php b/src/Symfony/Component/Validator/Constraints/Luhn.php
index da1b063b2f2a..198fb29baf29 100644
--- a/src/Symfony/Component/Validator/Constraints/Luhn.php
+++ b/src/Symfony/Component/Validator/Constraints/Luhn.php
@@ -29,11 +29,16 @@ class Luhn extends Constraint
     public const INVALID_CHARACTERS_ERROR = 'dfad6d23-1b74-4374-929b-5cbb56fc0d9e';
     public const CHECKSUM_FAILED_ERROR = '4d760774-3f50-4cd5-a6d5-b10a3299d8d3';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
         self::CHECKSUM_FAILED_ERROR => 'CHECKSUM_FAILED_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'Invalid card number.';
 
     public function __construct(
diff --git a/src/Symfony/Component/Validator/Constraints/NotBlank.php b/src/Symfony/Component/Validator/Constraints/NotBlank.php
index 277e22d60d3c..38637ad20260 100644
--- a/src/Symfony/Component/Validator/Constraints/NotBlank.php
+++ b/src/Symfony/Component/Validator/Constraints/NotBlank.php
@@ -26,10 +26,15 @@ class NotBlank extends Constraint
 {
     public const IS_BLANK_ERROR = 'c1051bb4-d103-4f74-8988-acbcafc7fdc3';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::IS_BLANK_ERROR => 'IS_BLANK_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should not be blank.';
     public $allowNull = false;
     public $normalizer;
diff --git a/src/Symfony/Component/Validator/Constraints/NotCompromisedPassword.php b/src/Symfony/Component/Validator/Constraints/NotCompromisedPassword.php
index 3cde036fb9a7..3329d3c1abc0 100644
--- a/src/Symfony/Component/Validator/Constraints/NotCompromisedPassword.php
+++ b/src/Symfony/Component/Validator/Constraints/NotCompromisedPassword.php
@@ -26,7 +26,14 @@ class NotCompromisedPassword extends Constraint
 {
     public const COMPROMISED_PASSWORD_ERROR = 'd9bcdbfe-a9d6-4bfa-a8ff-da5fd93e0f6d';
 
-    protected static $errorNames = [self::COMPROMISED_PASSWORD_ERROR => 'COMPROMISED_PASSWORD_ERROR'];
+    protected const ERROR_NAMES = [
+        self::COMPROMISED_PASSWORD_ERROR => 'COMPROMISED_PASSWORD_ERROR',
+    ];
+
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
 
     public $message = 'This password has been leaked in a data breach, it must not be used. Please use another password.';
     public $threshold = 1;
diff --git a/src/Symfony/Component/Validator/Constraints/NotEqualTo.php b/src/Symfony/Component/Validator/Constraints/NotEqualTo.php
index 4b2accdf7528..9a5c07b21e2a 100644
--- a/src/Symfony/Component/Validator/Constraints/NotEqualTo.php
+++ b/src/Symfony/Component/Validator/Constraints/NotEqualTo.php
@@ -23,9 +23,14 @@ class NotEqualTo extends AbstractComparison
 {
     public const IS_EQUAL_ERROR = 'aa2e33da-25c8-4d76-8c6c-812f02ea89dd';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::IS_EQUAL_ERROR => 'IS_EQUAL_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should not be equal to {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/NotIdenticalTo.php b/src/Symfony/Component/Validator/Constraints/NotIdenticalTo.php
index 82ee014eb6fb..206c10613732 100644
--- a/src/Symfony/Component/Validator/Constraints/NotIdenticalTo.php
+++ b/src/Symfony/Component/Validator/Constraints/NotIdenticalTo.php
@@ -23,9 +23,14 @@ class NotIdenticalTo extends AbstractComparison
 {
     public const IS_IDENTICAL_ERROR = '4aaac518-0dda-4129-a6d9-e216b9b454a0';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::IS_IDENTICAL_ERROR => 'IS_IDENTICAL_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should not be identical to {{ compared_value_type }} {{ compared_value }}.';
 }
diff --git a/src/Symfony/Component/Validator/Constraints/NotNull.php b/src/Symfony/Component/Validator/Constraints/NotNull.php
index 8deb3f0d06d1..2fd4123cdfca 100644
--- a/src/Symfony/Component/Validator/Constraints/NotNull.php
+++ b/src/Symfony/Component/Validator/Constraints/NotNull.php
@@ -24,10 +24,15 @@ class NotNull extends Constraint
 {
     public const IS_NULL_ERROR = 'ad32d13f-c3d4-423b-909a-857b961eb720';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::IS_NULL_ERROR => 'IS_NULL_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should not be null.';
 
     public function __construct(array $options = null, string $message = null, array $groups = null, mixed $payload = null)
diff --git a/src/Symfony/Component/Validator/Constraints/Range.php b/src/Symfony/Component/Validator/Constraints/Range.php
index 49a0103f9c24..ca5cba3c985a 100644
--- a/src/Symfony/Component/Validator/Constraints/Range.php
+++ b/src/Symfony/Component/Validator/Constraints/Range.php
@@ -31,13 +31,18 @@ class Range extends Constraint
     public const TOO_HIGH_ERROR = '2d28afcb-e32e-45fb-a815-01c431a86a69';
     public const TOO_LOW_ERROR = '76454e69-502c-46c5-9643-f447d837c4d5';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
         self::NOT_IN_RANGE_ERROR => 'NOT_IN_RANGE_ERROR',
         self::TOO_HIGH_ERROR => 'TOO_HIGH_ERROR',
         self::TOO_LOW_ERROR => 'TOO_LOW_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $notInRangeMessage = 'This value should be between {{ min }} and {{ max }}.';
     public $minMessage = 'This value should be {{ limit }} or more.';
     public $maxMessage = 'This value should be {{ limit }} or less.';
diff --git a/src/Symfony/Component/Validator/Constraints/Regex.php b/src/Symfony/Component/Validator/Constraints/Regex.php
index 5709daaf58cc..74381eaf71a7 100644
--- a/src/Symfony/Component/Validator/Constraints/Regex.php
+++ b/src/Symfony/Component/Validator/Constraints/Regex.php
@@ -25,10 +25,15 @@ class Regex extends Constraint
 {
     public const REGEX_FAILED_ERROR = 'de1e3db3-5ed4-4941-aae4-59f3667cc3a3';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::REGEX_FAILED_ERROR => 'REGEX_FAILED_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value is not valid.';
     public $pattern;
     public $htmlPattern;
diff --git a/src/Symfony/Component/Validator/Constraints/Time.php b/src/Symfony/Component/Validator/Constraints/Time.php
index b23fd3ddfbf2..f281ae1ee85b 100644
--- a/src/Symfony/Component/Validator/Constraints/Time.php
+++ b/src/Symfony/Component/Validator/Constraints/Time.php
@@ -25,11 +25,16 @@ class Time extends Constraint
     public const INVALID_FORMAT_ERROR = '9d27b2bb-f755-4fbf-b725-39b1edbdebdf';
     public const INVALID_TIME_ERROR = '8532f9e1-84b2-4d67-8989-0818bc38533b';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_FORMAT_ERROR => 'INVALID_FORMAT_ERROR',
         self::INVALID_TIME_ERROR => 'INVALID_TIME_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value is not a valid time.';
 
     public function __construct(
diff --git a/src/Symfony/Component/Validator/Constraints/Timezone.php b/src/Symfony/Component/Validator/Constraints/Timezone.php
index 2cc47985938b..c9279a9cdb31 100644
--- a/src/Symfony/Component/Validator/Constraints/Timezone.php
+++ b/src/Symfony/Component/Validator/Constraints/Timezone.php
@@ -34,13 +34,18 @@ class Timezone extends Constraint
     public $intlCompatible = false;
     public $message = 'This value is not a valid timezone.';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::TIMEZONE_IDENTIFIER_ERROR => 'TIMEZONE_IDENTIFIER_ERROR',
         self::TIMEZONE_IDENTIFIER_IN_ZONE_ERROR => 'TIMEZONE_IDENTIFIER_IN_ZONE_ERROR',
         self::TIMEZONE_IDENTIFIER_IN_COUNTRY_ERROR => 'TIMEZONE_IDENTIFIER_IN_COUNTRY_ERROR',
         self::TIMEZONE_IDENTIFIER_INTL_ERROR => 'TIMEZONE_IDENTIFIER_INTL_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public function __construct(
         int|array $zone = null,
         string $message = null,
diff --git a/src/Symfony/Component/Validator/Constraints/Type.php b/src/Symfony/Component/Validator/Constraints/Type.php
index 425f5dcc1e91..5d8aa1b21b70 100644
--- a/src/Symfony/Component/Validator/Constraints/Type.php
+++ b/src/Symfony/Component/Validator/Constraints/Type.php
@@ -24,10 +24,15 @@ class Type extends Constraint
 {
     public const INVALID_TYPE_ERROR = 'ba785a8c-82cb-4283-967c-3cf342181b40';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_TYPE_ERROR => 'INVALID_TYPE_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value should be of type {{ type }}.';
     public $type;
 
diff --git a/src/Symfony/Component/Validator/Constraints/Ulid.php b/src/Symfony/Component/Validator/Constraints/Ulid.php
index fc4f810955ab..ece08c721cd7 100644
--- a/src/Symfony/Component/Validator/Constraints/Ulid.php
+++ b/src/Symfony/Component/Validator/Constraints/Ulid.php
@@ -26,13 +26,18 @@ class Ulid extends Constraint
     public const INVALID_CHARACTERS_ERROR = 'e4155739-5135-4258-9c81-ae7b44b5311e';
     public const TOO_LARGE_ERROR = 'df8cfb9a-ce6d-4a69-ae5a-eea7ab6f278b';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::TOO_SHORT_ERROR => 'TOO_SHORT_ERROR',
         self::TOO_LONG_ERROR => 'TOO_LONG_ERROR',
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
         self::TOO_LARGE_ERROR => 'TOO_LARGE_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This is not a valid ULID.';
 
     public function __construct(
diff --git a/src/Symfony/Component/Validator/Constraints/Unique.php b/src/Symfony/Component/Validator/Constraints/Unique.php
index a4349d83727d..a18807e15239 100644
--- a/src/Symfony/Component/Validator/Constraints/Unique.php
+++ b/src/Symfony/Component/Validator/Constraints/Unique.php
@@ -25,10 +25,15 @@ class Unique extends Constraint
 {
     public const IS_NOT_UNIQUE = '7911c98d-b845-4da0-94b7-a8dac36bc55a';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::IS_NOT_UNIQUE => 'IS_NOT_UNIQUE',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This collection should contain only unique elements.';
     public $normalizer;
 
diff --git a/src/Symfony/Component/Validator/Constraints/Url.php b/src/Symfony/Component/Validator/Constraints/Url.php
index 0fadca99434a..e3bea2e1b3d6 100644
--- a/src/Symfony/Component/Validator/Constraints/Url.php
+++ b/src/Symfony/Component/Validator/Constraints/Url.php
@@ -25,10 +25,15 @@ class Url extends Constraint
 {
     public const INVALID_URL_ERROR = '57c2f299-1154-4870-89bb-ef3b1f5ad229';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::INVALID_URL_ERROR => 'INVALID_URL_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     public $message = 'This value is not a valid URL.';
     public $protocols = ['http', 'https'];
     public $relativeProtocol = false;
diff --git a/src/Symfony/Component/Validator/Constraints/Uuid.php b/src/Symfony/Component/Validator/Constraints/Uuid.php
index f143c6368da3..b805e5e90cf7 100644
--- a/src/Symfony/Component/Validator/Constraints/Uuid.php
+++ b/src/Symfony/Component/Validator/Constraints/Uuid.php
@@ -30,7 +30,7 @@ class Uuid extends Constraint
     public const INVALID_VERSION_ERROR = '21ba13b4-b185-4882-ac6f-d147355987eb';
     public const INVALID_VARIANT_ERROR = '164ef693-2b9d-46de-ad7f-836201f0c2db';
 
-    protected static $errorNames = [
+    protected const ERROR_NAMES = [
         self::TOO_SHORT_ERROR => 'TOO_SHORT_ERROR',
         self::TOO_LONG_ERROR => 'TOO_LONG_ERROR',
         self::INVALID_CHARACTERS_ERROR => 'INVALID_CHARACTERS_ERROR',
@@ -39,6 +39,11 @@ class Uuid extends Constraint
         self::INVALID_VARIANT_ERROR => 'INVALID_VARIANT_ERROR',
     ];
 
+    /**
+     * @deprecated since Symfony 6.1, use const ERROR_NAMES instead
+     */
+    protected static $errorNames = self::ERROR_NAMES;
+
     // Possible versions defined by RFC 4122
     public const V1_MAC = 1;
     public const V2_DCE = 2;
diff --git a/src/Symfony/Component/Validator/composer.json b/src/Symfony/Component/Validator/composer.json
index e3d638c95e4e..9ae5623300fc 100644
--- a/src/Symfony/Component/Validator/composer.json
+++ b/src/Symfony/Component/Validator/composer.json
@@ -17,6 +17,7 @@
     ],
     "require": {
         "php": ">=8.0.2",
+        "symfony/deprecation-contracts": "^2.1|^3",
         "symfony/polyfill-ctype": "~1.8",
         "symfony/polyfill-mbstring": "~1.0",
         "symfony/polyfill-php81": "^1.22",

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