This scope item makes it possible to make corrections to errors in pricing or sales tax calculations. If errors are detected, debit memo requests can be created with a correction of the amount to be debited. This is then placed on a billing block for review. The amount to be debited is calculated as the difference between the original amount and the correct amount. This is entered manually into the debit memo request. Once checked, it is released and becomes relevant for billing. The amount then appears in the billing due list. The credit memo can be created manually. Alternatively, the automatic periodic billing process creates a debit memo to be sent to the customer and posts a journal entry.