Created attachment 100083 [details] Error message after clicking save on the catalog screen. Some people suggested to do mapping of biblioitemnumber field, the fild 999 c and 999 d both are mapped in subfield under the framework.
Hello Abhi, Are you using the default framework that is installed along with Koha? Have you done some modifications to this framework? 999$c should be mapped to biblio.biblionumber, and 999$d to biblioitems.biblioitemnumber. But that are the default values. This is a support question and should be asked on the mailing list. https://lists.koha-community.org/cgi-bin/mailman/listinfo/koha-bugs Closing this bug report.