Not able to create a record in sys_user_delegate table via REST APIDescriptionEven if the user has REST API Role, users are unable to create a record in the sys_user_delegate table when creating a request via Rest API Explorer. They can create a record in other tables, but not in sys_user_delegate. When selecting the option to add a field in the Builder in the Request Body, an alert that says "Select a table in Path parameters section on button click" is displayed. Steps to Reproduce: Hop into an Out of the box instanceAssign a non-admin user with rest api exploer roleImpersonate the user and navigate to REST API explorerClick "Create a record (POST)"Select table "sys_user_delegate"Click "Add a field" in "Request Body" section and will see the popup Investigation Summary: It works for admin userIt works for other tables (not sys_user_delegate)Checked OOB doesn't have particular ACL. tried to add an ACL explicitly and didn't workDoesn't seem to trigger any activity in server side and popups is from javascriptResolutionTo grant read access to the rest_api_explorer role, a new ACL can be added to sys_user_delegate. Note: Instead of modifying the existing one, create a new one. Otherwise High Security plugin will default access to deny. Reference: Default deny (instance security hardening) Refer to Access control list rules for adding ACLs to tables.