What version did you come from?
There has been deprication of several functions and Epicor Dev has restricted access to somethings.
I ran into something similiar and it looks like at somepoint scope changed in some context:
Upgraded from 2022.1 to 2023.2 BPM That Worked Fine, Now Gives’The table result.xxxxxx has more than one record’ - Kinetic ERP - Epicor User Help Forum