Diagnosis
During the customer change process, budget billing plans for transfercontracts are copied. As a prerequisite for this function the budgetbilling plans must be deactivated during the customer change process.
The budget billing plan for contract &V1& was not deactivated for thisprocess.

Procedure
Check the status of the budget billing plan for contract &V1&.
You must deactivate this budget billing plan for the customer change.See field CC in the header data of the budget billing plan.