In our Network Zone, we work with unique bibliographic records shared by several institutions. The MARC21 7XX subfield $5
is used to indicate local information specific to each IZ.

Currently, in Alma and Primo VE searches, 7XX fields containing a $5 from other IZs are included in retrieval and affect
the Dedup and FRBR grouping processes within an IZ. We can only hide these fields from user display by configuring Primo VE rules.
As a result, records retrieved in a Primo VE view of one IZ may include data that are strictly local to another institution and may
even influence FRBR version grouping, producing less relevant or confusing results for users.

Requested Enhancement:
We request the addition of a configuration option (at the IZ and/or NZ level) that allows:
Excluding from search indexing and deduplication/FRBR logic any 7XX fields whose $5 does not correspond to the specific IZ, or
At least preventing such fields from being used in retrieval and grouping criteria, while maintaining their local character.

Benefit:
This enhancement would respect the cataloging meaning of subfield $5, increase result relevance for each institution, and reduce undesired
effects in the presentation of versions in Primo VE.