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Technical information about vendor record contribution

Requirements for records

OCLC database specialists thoroughly evaluate records submitted by vendors. OCLC loads vendor records into WorldCat via offline batchload process if the following conditions are met:

  • The records do not match existing records
  • Fewer than 2% of the records contain machine-detectable errors in MARC coding
  • The records adhere to U.S. standards for cataloging, including both descriptive cataloging and forms of headings
  • The records meet OCLC minimum (K-level) standards for completeness
  • The records are in MARC 21 format