Incoming message Match to Recommended matching approach
0100 / A authorization request No previous transaction required Treat as a new authorization decisioning request unless it is identified as a duplicate or retry.
0101 / A authorization repeat Original 0100 / A authorization request Match using Token, traceid_lifecycle, Trans_link, Ret_Ref_No_DE37, TXN_Time_DE07, and POS_Termnl_DE41 when available.
0120 / J authorization advice Original 0100 / A authorization request Match using Token plus available lifecycle references such as traceid_lifecycle, Auth_Code_DE38, or Trans_link.
0120 / D authorization reversal Original 0100 / A authorization request Match to the original authorization and release or adjust the related block.
0400 / D authorization reversal request Original 0100 / A authorization request Match to the original authorization and release or adjust the related block.
0420 / D authorization reversal advice Original 0100 / A authorization request Treat the same as 0400 / D in practice and release or adjust the related block.
1240 / P financial / first presentment Original authorization or authorization advice Match to the related authorization when possible, then release related blocks and post or reconcile the transaction.
05pp / P, 06pp / P, 07pp / P financial notification Original authorization or authorization advice Use the same general presentment matching approach when applicable.
1240 / E financial reversal Prior financial notification Match to the prior financial notification and reverse or adjust the previous posted financial impact.
25pp / E, 26pp / E, 27pp / E financial reversal Prior financial notification Use the same general financial reversal matching approach when applicable.
1240 / C chargeback Related financial notification Optionally match to the related financial notification using clearing and transaction references.
1240 / H chargeback non-credit Related financial notification Use the same general chargeback matching approach as 1240 / C.
1240 / K chargeback reversal Original 1240 / C or 1240 / H chargeback Match to the original chargeback and reverse or adjust the chargeback-related impact.
Cut-off message Prior cut-off message with same CutOffId, for duplicate detection Use CutOffId as the primary key for cut-off duplicate detection.