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Elavon ISO Protocol (EISOP)
Data Encoding and Representation
Important Message Fields
Authorisation Message Format
Reversal Message Format
Conversion Rate Message Formats
- 1304 / 1314 Messages – DCC Rate Requests
- 1305 / 1315 Messages – DCC Inquiry Request
Reconciliation Message Format
- 1500 / 1510 Messages – Reconciliations
Network Management Message Format
Summary of Field Usage
Field Descriptions
Appendix A: Message Authentication Code (MAC) Generation and Validation
Appendix B: Protocol Ports
Appendix C: Product Codes
Revision History

Field 41: Card Acceptor Terminal Identification

Format: n8

Description: See the Important Message Fields section for a description of the way this field should be formatted.

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Registered Office: Block F1, Cherrywood Business Park, Dublin 18, D18 W2X7, Ireland

Elavon Financial Services DAC, trading as Elavon Merchant Services, is regulated by the Central Bank of Ireland.

Elavon Financial Services DAC. Registered in Ireland with Companies Registration Office. The liability of the member is limited. United Kingdom branch registered in England and Wales under the number BR022122.

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