In the stdlogs, we see the following error
05/12 23:34:30.50 SERVER spelsrvr 2484 ERROR pcexec.c 6563 Spell interp failed at cr::post_val_category_modified (...) pcat.spl:1366: Math argument type mismatch
Customer would like to resolve this error
Release : 17.3
Suspect a customization is causing this error
"Math argument type mismatch"
Indicates a data type error
Indicates a a category is being changed after initial creation in a Request, Incident, or Problem ticket.
Spelsrvr indicates that this is a customization which is beyond the scope of support.