WorldCat Validation release notes and known issues
Find WorldCat Validation release notes and known issues. Release notes are documents that contain information about new product features and enhancements as installed in scheduled releases.
WorldCat Validation release notes provide current OCLC-MARC Updates; changes to tagging conventions and coding practices for Bibliographic, Authority, and Holdings records; and new MARC codes. To see past OCLC-MARC Updates, see Technical Bulletins.
- 2021 WorldCat Validation release notes
- Review the most recent release notes for WorldCat Validation.
- 2020 WorldCat Validation release notes
- Review WorldCat Validation release notes from 2020.
- 2018 WorldCat Validation release notes
- Review WorldCat Validation release notes from 2018.
- Known issues
- This page lists known issues in the WorldCat Validation service. Availability dates are subject to change.