Msg Delimiter

This 15-digit field contains a Transaction Identifier associated with the transaction being settled:

• If the transaction was authorized online, this field must contain the value (if returned) from the original response message.
• If the transaction identifier received in the original authorization response message is less than 15-digits, this field is left-justified and space-filled.
• If a value was not returned in the authorization response, or the transaction was processed offline, this is defaulted to zeros.