Identifies the merchant to the Datawire System.
The Datawire Id is a unique customer identifier generated by Datawire and returned to the client after successfully registering the merchant (using the FDMSRegister component). This Id (which is sent in all subsequent transactions) allows a transaction, to pass through the Datawire system and be correctly routed to the FDMS Payment processor.
The maximum length for this property is 32 characters.
Note: This property is only applicable when TransportProtocol is set to '0' (Datawire).