A credit note for the invoice is created and possibly a new debit invoice.
For more details, refer to these documents:
Send the credit note, and possibly the new debit invoice, to the customer or payer.
You can later review the connection between the original invoice and the credit note in 'Rental Invoice. Display/Credit' (STS350) for rentals and 'Leasing Invoice. Display/Credit' (LTS350) for leasing. By selecting an option, the credit note number for an original invoice is displayed.
For more detailed information, see the appropriate instruction.