All cataloging takes place in OCLC except for:
Cataloging should take place in OCLC for everything, except adding local fields. When to catalog in OCLC:
All bib records should be exported to the Network Zone (NZ) from OCLC except for exceptions defined in MSP-3. The following MSP exceptions and ebooks not in the Community Zone (CZ) should be exported to the Instution Zone (IZ) from OCLC:
All NZ bib records are required to have an OCLC number in MARC 035 $$a, except brief bib records that are created for ordering. OCLC bib records in the NZ match on the OCLC number in MARC 035 $$a. NZ bib records are updated from OCLC master record imports on a daily basis for new, updated, and merged bib records.
NEVER overlay/edit/delete an OCLC number from MARC 035 $$a in NZ bib records. The exception to the rule is for brief bib records that have been created for ordering. Brief bib records can be edited to add an OCLC number in MARC 035 $$a. Once an OCLC number has been added to a brief bib record it should not be overlayed, edited, or deleted.
The MMS ID (Metadata Management System ID) is the unique record identifier in Alma. You may be asked to supply the MMS ID when troubleshooting in Alma and it is important to be able to provide the correct MMS ID.
All records in Alma are assigned an MMS ID: