Hello,
I upgraded ArcGIS Pro to version 3.5.2; I started facing this problem:
When I'm using the calculate field tool in attribute table, those 2 errors (errors 001156 & 000595) are popping up. knowing that the 2 fields have the same data type and length. Moreover, it's not related to these specific Object Ids in the attached photo, it's giving me this error to all records.