- WorldShare ILL
OCLCs interlibrary loan systems primarily use the OCLC number of a record to match onto an item. Only items cataloged in WorldCat are assigned OCLC numbers.
Articles are not typically cataloged in WorldCat, but rather are pulled in from a vendor databases, and thus are not given an OCLC number. This means interlibrary loan requests will set on the journal that the article is published in, which is cataloged and WorldCat and does have an OCLC number.
However, if an OCLC member library does catalog an article into WorldCat and assigns it an OCLC number, the request will set on the article based on the information drawn from WorldCat.