Hi @mhashemi ,

Because the Overview tab in Service Operations Workspace is rendered via UI Builder layouts and not the standard form UI, a UI Policy alone won’t hide a field there,  you must edit the workspace design in UI Builder and remove or conditionally hide the field in the Overview layout...

If you found my response helpful, please mark it as ‘Accept as Solution’ and ‘Helpful’. This helps other community members find the right answer more easily and supports the community.