Reversing a Posted Service Invoice

When a service order is invoiced, service ledger entries are created. When a user wants to reverse the posted invoice (for example : a wrong service item was invoiced) how is this done in Navision

At the end of the reverse I want all ledger entries are reversed (service ledger entries, Item Ledger entries, ect.).

The only way to inverse a posted invoice is to make a credit memo of it and create a new (correct) invoice.
Undoing an invoice is not legal in most (if not all) countries.

Dear Kriki,

thank you for answering. No Service Ledger Entry will be created. Therefore it isn’t a correct reverse or correction. (Service item, and service contractnr. are filled in).