The Elavon Gateway API message details are specified in the Elavon Gateway Message Getting Starting Guide. For more details see this guide and / or the appropriate Fusebox industry guides. The following notes are Simplify-specific items:
If the response message sent to the POS in field 1010 on an offline transaction starts with *ICC or *SLR, the message is generated by Simplify. See Simplify-Generated Message Codes for more information on these messages.
To allow manual entry at the PIN Pad, set Field 3 in the Request message to ‘K’. Manual entry must also be enabled for the card type used in the transaction. This is not supported for debit.
If the POS system knows the token for the customer’s account number, it can be sent in Field 3 of the Request message, preceded by ‘ID:’ For example: 0003,ID:1112438802818779. If the token is sent in Field 3, Field 115 (Transaction Qualifier) MUST also be sent.
If the POS system knows the customer’s account number, it can be sent in Field 3, with the account Expiration Date sent in Field 4.
Refer to the Elavon Gateway Message Getting Started Guide for more details.
Important: Elavon does not recommend padding the Reference Number field (Field 0007) with leading zeros. If padding is used, please pad all messages with zeroes in a consistent manner. This will eliminate any potential for discrepancies in how this field is presented in two-part transactions, and greatly reduce any chance of downgrades or fees.