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"F37"

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Illustration of ISO 8583 message field layout used for field F37

ISO 8583

ISO 8583 Field Descriptions (F37)

F37-RETRIEVAL REFERENCE NUMBER is a code generated by the bank that initiates a transaction, used to uniquely track it. It is a 12-character alphanumeric value.

Example of RRN printed on a POS receipt used to trace ISO 8583 transactions

ISO 8583

ISO 8583 Field Descriptions (F37)

F37 - RETRIEVAL REFERENCE NUMBER: a 12-digit alphanumeric value generated by the Acquirer that initiates the transaction. It must be printed on the POS receipt or ATM slip. RRN is the reference number that allows a transaction to be located.

Diagram illustrating the ISO 8583 F7 transmission date and time field

ISO 8583

ISO 8583 Field Descriptions (F7)

F7 - TRANSMISSION DATE AND TIME: the field containing the moment the initiating party started the transaction. It is a 10-character numeric value in MMDDhhmmss format.