Resolución de problemas de entrega de registros MARC

Presence of an OCLC number

An OCLC number is required for all titles. Any title that does not have an OCLC number with a corresponding record in WorldCat (and that has not been matched to an OCLC number by the system) will not output a record.

Titles must have an OCLC number (OCN). A title might be missing an OCLC number if:

1. No record exists for the item in WorldCat.
2. 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:

• Option 1: View the percentage of OCLC numbers in a collection is listed in the Collections available in the WorldCat knowledge base
• Option 2: View OCLC number coverage by downloading a KBART file of the collection. See Report errant OCLC numbers for complete instructions

Format value

Titles in the knowledge base are designated by format with a specific coverage (coverage_depth in KBART) within some formats. Collection Manager uses these format designations to determine record output. Available formats are:

• Journal
• e-Book
• Audio
• Image
• Video
• Otros

All formats could output records if they meet certain requirements around coverage value and presence of a title URL.

Coverage value

Titles that are of Journal format have an associated coverage value.

• Titles that are of Journal format will output records if the titles have a coverage value of:
  • Full Text, or 
  • Imprimir
• Titles that are of Journal format will NOT output records if the titles have a coverage value of:
  • Selected Full Text
  • Abstracts
  • Indexed

Presence of a title URL

Some formats require a title URL to output a record.

• Formats that require an OCLC number and a title URL to output a record:
  • Journal (with a coverage value of Full Text)
  • e-Book
  • Audio, Image, and Video formats
• Formats that require an OCLC number but will output a record even if there is no title URL:
  • Journal (with a coverage value of Print)
  • Other formats

For more information, see Title-level settings in knowledge base collections, the Format and Coverage sections.

Missing Records

Possible reasons for missing records:

1. 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.
2. 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.
3. Records may be in OCLC's cataloging queue depending upon how partner metadata feeds coincide with titles' street dates.
4. Past cataloging practices concerning multi-volume titles may have recommended a set record with multiple URLs being used for multi-volume titles