The intellectual entity (IE) number in its OPAC/Published form (PID) is not available in the Physical Items Subject Area.
The PID is part of the Alma UI but does not have mapping within Alma Analytics
subject area: physical items
The PID becomes the source record ID in Primo (permalink) and is also needed to integrate with third party reading lists.
From the IGeLU-ELUNA Analytics Working Group, Analytics Evidence Document
Please send questions or comments to the Analytics Working Group Listserv