Create a Physical Titles or Physical Items set from a list of MMS IDs
It is possible to create an All Titles set from a list of MMS IDs, but not a Physical Titles or Physical Items set. To run certain jobs – like Change Holdings Information – a Physical Titles set is required. In order to run this job on a list of MMS IDs, you must first create an All Titles set, then extract some other key like OCLC #, then create a Physical Titles set from that list, and only then can you run your job. Since all physical titles and items DO have MMS IDs, it should be possible to create a Physical Titles or Physical Items set from a list of MMS IDs.

Dear all,
We are looking into adding the MMS ID for more sets. As the MMS ID identifies a bib record, including it for title sets makes sense - and we are planning to add this option to physical titles sets.
However, regarding physical items sets, the set entity is the item, while the MMS ID is part of the metadata of the bibliographic record - which limits our ability to use it when creating a set of physical items, as it is not an identifier of the item.
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Simon Hunt commented
This would be an extremely useful addition!
Since OCLC number (or other 035 number), ISBN, etc. are not guaranteed to be unique identifiers in Alma, it is puzzling that Alma's own unique MMS ID is not always an option for creating itemized sets. It prevents us from reliably targeting specific records in Analytics and generating a 1:1 set based on the analysis.