Parses and builds ISO 8583 financial transaction messages. ISO 8583 is the international standard for payment card transaction messages exchanged between acquirers, networks, and issuers.
Inputs
Tab: Parse an existing ISO 8583 message or build a new one.
Hex Message: Raw ISO 8583 message in hexadecimal (for parsing).
MTI: Message Type Indicator (4 digits). Defines the message class, function, and origin.
Fields: ISO 8583 data elements to include in the message.
Tips
Field 2 = PAN, Field 11 = STAN, Field 12 = Time, Field 35 = Track 2, Field 39 = Response Code.
The bitmap (fields 1 or 0-1) indicates which fields are present in the message.
A secondary bitmap (bit 1 set) extends the field range to 128.