Diagnosis
Billing (or billing simulation) is to be executed for the period fromV1 to v2. however, this is not possible because the contract isonly allocated to the installation to be billed with the contract forthe period from &v3& to &v4&.

Example
The error situation could arise as follows:
Periodic billing as of December 31, 1998 was prepared forthe contract.
The periodic billing for 1998 is to be used to generate a budgetbilling plan for 1999.
Before the billing order is executed for the periodic billing, amove-out is entered for the contract for January 1, 1999.
Entering the move-out does not supress the billing order for theperiodic billing, since it lies outside the interval period forsuppression.
During billing, the billing order for the periodic billing is startedfirst. In the process, the system attempts to extrapolate a budgetbilling extrapolation for 1999. This is not possible, however,because the move-out has already been entered for the contract, whichmeans that the contract is no longer valid for the period February1-December 31 1999.

System Response

Procedure
To correct the situation described above, you have the followingoptions:

• If you do not want to perform periodic billing, you can delete the
billing order for the periodic billing, and then start the billingorder for the final billing.

• If you want to perform period billing first, and then the final
billing, start the periodic billing before you enter the move-out. Todo this, first reverse the move-out. Then start the billing order forthe periodic billing, and then - lastly - enter the move-out again.