We have multiple companies that ultimately rolls into one set of financials. Company A accidentally paid invoice #1 for $100.00 when invoice #1 actually belonged to Company B. Company B also received and paid for invoice #1 already. Company B wants to use the credit that belongs to Company A. We do not utilize AR for this purpose, so I need to do this through AP.
There will be no actual money exchanged between A and B. How can entries be made in AP so that a trail is left?