Diagnosis
You have tried to perform set operations after editing address listversions manually.

System Response
It is not allowed to perform set operations when any address listversion might be edited manually during the same transaction.
Changes in adress lists are:

• Changing the description of a version


• Deleting a version


• Completing a version


• Deleting or adding addresses

Procedure
Save your manual changes by saving the mailing campaign. Call up theaddress list again and perform the set operation.