Diagnosis
You have tried to change a key field for a condition record that canalready be found in the database.

System Response
This is not possible. This is because the condition record is alreadyused in other business processes. These would then not find thecondition record.

Procedure
Create a new condition record and delete the old one, if required. Makesure that the deleted condition record is not really deleted from thedatabase but is just switched so that is inactive. This means that youcan still see the contents of this condition record but that you can nolonger use it in business processes.