
- You can reverse a billing document more than once as long as it has not been invoiced. This is the case, for example, if the billing document was outsorted in billing.
- The agent can reverse the billing document and carry out additional activities such as changing the meter reading result. Then the contract can be billed again.
- The reversed billing document does not affect the customer, as nothing has been posted in the contract account and a bill has not been created.
- Functions were added to the reversal process specifically for processing installation groups.

There are two times at which a reversal is possible in the system. Reversal can occur after billing or invoicing. There are two possibilities for a reversal after invoicing: either a reversal of invoicing, or a full reversal (reversal of invoicing and of billing).

