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This is a tracking category for CS1 citations that have |oclc= errors.

Help desk

Check |oclc= value

The |oclc= parameter is for the OCLC identifier. Only a single OCLC identifier is allowed. (If relevant, multiple OCLCs can be specified using |id={{OCLC|...}} instead.)

The identifier must be in one of these forms:

1. prefix ocm followed by 8 digits
2. prefix ocn followed by 9 digits
3. prefix on followed by 10 (or more) digits
4. prefix (OCoLC) followed by a variable number of digits without leading zeros
5. 1 to 10 (or more) digits without prefix

Further validation is not performed.

To resolve this error, ensure that the |oclc= value is correct.

If the value is correct and larger than the currently configured limit of 10380000000, please report this at Help talk:Citation Style 1, so that the limit can be updated.

A tip for fixing this error: Editors sometimes place valid ISBN, LCCN, ASIN, or other identifiers in |oclc=.

Pages with this error are automatically placed in Category:CS1 errors: OCLC.^[a]