In transaction DNOTIFWL there appears message when trying to change 'Person responsible' field with the value which already has been there once:
**You cannot make changes to partner function PR
**Message no. DNO075
**Partner cannot be changed due to settings in Customizing.
As a result value can't be changed to the value which has been there earlier once.
EXAMPLE OF PROBLEM:
First value: XXX -> ok
Update to second value: YYY -> ok
Update to third value: XXX -> error message
Any tips for correction or workaround?