Category:CS1 errors: OCLC

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

Check |oclc= value

The |oclc= parameter is the OCLC identifier. Only a single OCLC identifier is allowed. 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 digits
  4. prefix (OCoLC) followed by a variable number of digits without leading zeros
  5. 1 to 10 digits without prefix

Further validation is not performed.

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

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]


  1. Pages in the Book talk, Category talk, Draft talk, Education Program talk, File talk, Help talk, MediaWiki talk, Module talk, Portal talk, Talk, Template talk, User, User talk, and Wikipedia talk namespaces are not included in the error tracking categories.


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