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OCLC Support

Why am I missing MARC files from my record delivery?

Applies to
  • WorldShare Collection Manager
Answer
  1. Titles must have OCLC numbers to output records.
  • Titles must have an OCLC number (OCN). A title might be missing an OCLC number if:
    • No record exists for the item in WorldCat
    • A record exists but because of the complexities of cataloging electronic items, it is not classified as an electronic resource in a way that corresponds to the knowledge base’s matching process
  • There are 2 options for viewing gaps in OCLC number coverage:
  1. Some titles might not meet the requirements for record output. Format, coverage value, and title URL requirements
  • Titles must:
    • Have an OCLC number and have a URL/856 and be of a readable format and coverage (i.e., journal [fulltext, print], ebook, and so forth), or
    • Have an OCLC number and have a coverage value of other or print (but lack a URL/856)
  1. A title is in multiple collections.
  • Titles are often available through more than one provider. If you have a title in multiple knowledge base collections, Collection Manager will deliver a single record for the knowledge base title and the record will have multiple URLs.
  • If all of your records are delivered in one file and you hold a title in several knowledge base collections, you will get one record for the title. To have records output in a separate collection, see Collection-level settings in knowledge base collections, Delivery File Output.
  1. There are duplicate entries for the same title in a collection.
  • This occurs when a provider wants to include different coverage depths for the same records. Your MARC delivery file will generate one MARC record per OCLC number. For example, a collection could say it has a 100 titles, but half of them are duplicates with the same OCLC number to include two coverage depths: eBook and full text.

 

There are several reasons you could get a different number of MARC records than that on your title list from a provider:

  • Though OCLC and its partners work closely together to ensure a record for every e-resource title, there may be variances in the number of records received because some partner delivery programs are tied to customer holdings rather than sales history
  • Records may be in OCLC's cataloging queue depending upon how partner metadata feeds coincide with titles' street dates
  • Past cataloging practices concerning multi-volume titles may have recommended a set record with multiple URLs being used for multi-volume titles
  • Titles are often available through more than one provider. If you have a title in multiple knowledge base collections, Collection Manager will deliver a single record for the knowledge base title and the record will have multiple URLs. If all of your records are delivered in one file and you hold a title in several knowledge base collections, you will get one record for the title.
Additional information

See MARC Record delivery troubleshooting.

Page ID
4502