I've got a similar issue with Zone Stamps. My Library Loading Report comes up that I'm missing the part "Zone Identifier" (I'm using the AC10 Library). However, I have checked my Zone Categories, and NONE of them use this stamp. I also checked this in the Attribute Manager, which shows the same thing. Is there anywhere else a reference to a zone stamp could occur? Could it have snuck in with a legacy library part?
It's really not much of a problem; I just HATE the loading report coming up.
Chuck Kottka
Orcutt Winslow
Phoenix, Arizona, USA
ArchiCAD 25 (since 4.5)
Macbook Pro 15" Touchbar OSX 10.15 Core i7 2.9GHz/16GB RAM/Radeon Pro560 4GB