Mandatory
This field specifies the function of the message followed by a reference which is common to both the Sender and the Receiver. Where
where Common Reference consists of (Bank Code 1) (Location Code 1) (Reference Code) (Bank Code 2) (Location Code 2)
Function must contain one of the following codes (Error code(s): T47):
This field consists of the bank and location codes (Error code(s): T95) (from the ISO Bank Identifier Code) of both the Sender and the Receiver. These codes must appear in alphabetical order (letters take precedence over numbers) (Error code(s): T96).
Location Code 1 and Bank Code 2 are separated by four digits, which must consist of the rightmost non-zero digit of field 36, preceded by the three digits to the left of it. If there are no digits to the left of it, the space must be zero filled (Error code(s): T22).