diff --git a/service_container.rst b/service_container.rst
index 5c33d16e069..a4abf4ce2f7 100644
--- a/service_container.rst
+++ b/service_container.rst
@@ -840,6 +840,72 @@ argument for *any* service defined in this file! You can bind arguments by name
The ``bind`` config can also be applied to specific services or when loading many
services at once (i.e. :ref:`service-psr4-loader`).
+Abstract service arguments
+--------------------------
+
+Sometimes, when defining services in your Symfony applications, there are arguments
+that can't be added in config files. The reason is that their values can only be
+calculated at runtime in a :doc:`compiler pass `
+or :doc:`bundle extension `.
+
+If value is not replaced a ``RuntimeException`` would be thrown.
+
+.. configuration-block::
+
+ .. code-block:: yaml
+
+ # config/services.yaml
+ services:
+ # ...
+
+ App\Service\MyService:
+ arguments:
+ $rootNamespace: !abstract 'should be defined by Pass'
+
+ # ...
+
+ .. code-block:: xml
+
+
+
+
+
+
+
+ should be defined by Pass
+
+
+
+
+
+
+ .. code-block:: php
+
+ // config/services.php
+ namespace Symfony\Component\DependencyInjection\Loader\Configurator;
+
+ use App\Service\MyService;
+ use Psr\Log\LoggerInterface;
+ use Symfony\Component\DependencyInjection\Definition;
+ use Symfony\Component\DependencyInjection\Reference;
+
+ return function(ContainerConfigurator $container) {
+ $services = $container->services();
+
+ $services->set(MyService::class)
+ ->arg('$rootNamespace', abstract_arg('should be defined by Pass'))
+ ;
+
+ // ...
+ };
+
+In this case, if you don't replace the value, ``RuntimeException`` will be thrown
+with message ``Argument "$rootNamespace" of service "App\Service\MyService" is
+abstract: should be defined by Pass.``
+
.. _services-autowire:
The autowire Option
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