On December 10, 2018, OCLC installed changes to WorldCat validation. The new features and enhancements include: * OCLC-MARC validation of new MARC Codes announced in three Library of Congress Technical Notices (http://www.loc.gov/marc/marcginf.html#naa) issued August 2018 through October 12, 2018. * A new validation requirement for field 040 subfield $b (Language of Cataloging) to be included in every WorldCat bibliographic record. * Validation of the alphabetic prefix "cash" for Library and Archives Canada Subject Headings, as well as adjustments to authorizations used by LAC (OCLC symbol: NLC). Additionally, the relationship rules for bibliographic field 046 were corrected to allow subfields $c and $e to coexist in the same field. See the WorldCat Validation Release Notes for December 2018 at https://help.oclc.org/Metadata_Services/WorldShare_Record_Manager/WorldCat_validation_release_notes_and_known_issues/2018_release_notes for more details. Please forgive any duplication of this message. jay -- Jay Weitz OCLC * Senior Consulting Database Specialist, WorldCat Metadata Quality, Global Product Management 6565 Kilgour Place, Dublin, Ohio USA 43017 T +1-614-764-6156 * T +1-800-848-5878 x6156 * F +1-614-718-7195 [http://www.oclc.org/content/dam/ext-ref/emailsignature/oclc-logo-emailsignature.png]<http://www.oclc.org/home.en.html?cmpid=emailsig_logo> OCLC.org<http://www.oclc.org/home.en.html?cmpid=emailsig_link> * Blog<http://www.oclc.org/blog/main/?cmpid=emailsig_blog> * Facebook<http://www.facebook.com/pages/OCLC/20530435726> * Twitter<http://twitter.com/oclc> * YouTube<http://www.youtube.com/OCLCvideo>