Records from the Institution Zone that only contain a $$9LOCAL field without the accompanying $$A<institution_code> will not show local fields in Primo.
Primo checks for both the $$9 and the $$A, and when it doesn’t see both of them, the entire field is ignored.
Ex Libris advice
The best practice is to have all bib records in the Network Zone, unless they don’t have OCLC numbers or they are equipment records such as laptops and the like.
...
- Bib record is linked = no
- Contains $9LOCAL
Procedure for adding the subfield A
San Marcos has developed a procedure for this. See Special Treatment of Local Fields in IZ records not linked to NZ.docx.