The MT 103+ is a General Use message, ie, no registration in a Message User Group is necessary to send and receive this message. It allows the exchange of single customer credit transfers using a restricted set of fields and format options of the core MT 103 to make it straight through processable. The MT 103+ is a compatible subset of the core MT 103 that is documented separately.
The differences with the core MT 103 are:
appropriate MT 103+ format validation is triggered by the code STP in the validation flag field 119 ({3:{119: STP}}) of the user header of the message (block 3)
fields 52, 54, 55, 56 and 57 may only be used with letter option A
field 53 may only be used with letter options A and B
field 51A is not used in MT 103+. This message may only be used on the FIN SWIFT network since it requires special validation
field 23E may only contain codes CORT, INTC, SDVA and REPA
if field 53a is used with option B, Party Identifier must be used
subfield 1 (Account) of either field 59 or 59A is always mandatory
field 72, code INS must be followed by a valid BIC
field 72, codes REJT/RETN must not be used
field 72 must not include ERI information.