To convey accounts-payable adjustment information for the purpose of cash application, including payer-generated debit/credit memos
ADX01 specifies the amount of the adjustment and must be signed if negative. If negative, it reduces the payment amount; if positive, it increases the payment amount.
Code indicating reason for debit or credit memo or adjustment to invoice, debit or credit memo, or payment
ADX02 specifies the reason for claiming the adjustment.
Code identifying the Reference Identification
P0304: If either ADX-03 or ADX-04 is present, then the other is required
ADX03 and ADX04 specify the identification of the adjustment.
Reference information as defined for a particular Transaction Set or as specified by the Reference Identification Qualifier