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  • Elavon ISO Protocol (EISOP)
  • Data Encoding and Representation
  • Important Message Fields  
    • Reconciliation Number – Field 29
    • Acquiring Institution ID Code – Field 32
    • Approval Code – Field 38
    • Terminal ID Code – Field 41
    • Additional Private Data – Field 48
  • Authorisation Message Format  
    • 1100 / 1110 Messages – Pre-Authorisations
    • 1200 / 1210 Messages – Sale / Completions
    • 1220 / 1230 Messages – Refunds / Force
  • 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  
    • Message Length
    • Message Type Indicator (MTI)
    • Bitmap Primary
    • Bitmap Secondary
    • Field 2: PAN
    • Field 3: Processing Code
    • Field 4: Transaction Amount
    • Field 6: Cardholder Billing Amount
    • Field 10: Conversion Rate
    • Field 11: System Trace Audit Number (STAN)
    • Field 12: Transaction Date and Time
    • Field 14: Expiry Date
    • Field 22: POS Data Code
    • Field 24: Function Code
    • Field 25: Reason Code
    • Field 28: Reconciliation Date
    • Field 29: Reconciliation Number
    • Field 32: Acquiring Institution ID Code
    • Field 35: Track 2
    • Field 37: Retrieval Reference Number
    • Field 38: Approval Code
    • Field 39: Response Code
    • Field 41: Card Acceptor Terminal Identification
    • Field 42: Card Acceptor Merchant ID
    • Field 43: Payment Facilitator / Card Acceptor Location Name and Address
    • Field 44: Additional Response Data
    • Field 48: Additional Private Data
    • Field 49: Transaction Currency Code
    • Field 50: Reconciliation Currency Code
    • Field 51: Cardholder Billing Currency Code
    • Field 52: PIN Data
    • Field 53: Security Related Control Information
    • Field 54: Amount, Other
    • Field 55: ICC Data
    • Field 60: Reserved Private Data
    • Field 63: Reserved Private Data III
    • Field 64: MAC
    • Field 74: Number of Refunds
    • Field 75: Number of Cancelled Sales
    • Field 76: Number of Sales
    • Field 77: Number of Cancelled Refunds
    • Field 86: Amount of Refunds
    • Field 87: Amount of Cancelled Sales
    • Field 88: Amount of Sales
    • Field 89: Amount of Cancelled Refunds
    • Field 97: Reconciliation Net Amount
  • Appendix A: Message Authentication Code (MAC) Generation and Validation
  • Appendix B: Protocol Ports
  • Appendix C: Product Codes
  • Revision History

Field Descriptions

This section describes the following Elavon ISO Protocol fields:

  • Message Length
  • Message Type Indicator (MTI)
  • Bitmap Primary
  • Bitmap Secondary
  • Field 2: PAN
  • Field 3: Processing Code
  • Field 4: Transaction Amount
  • Field 6: Cardholder Billing Amount
  • Field 10: Conversion Rate
  • Field 11: System Trace Audit Number (STAN)
  • Field 12: Transaction Date and Time
  • Field 14: Expiry Date
  • Field 22: POS Data Code
  • Field 24: Function Code
  • Field 25: Reason Code
  • Field 28: Reconciliation Date
  • Field 29: Reconciliation Number
  • Field 32: Acquiring Institution ID Code
  • Field 35: Track 2
  • Field 37: Retrieval Reference Number
  • Field 38: Approval Code
  • Field 39: Response Code
  • Field 41: Card Acceptor Terminal Identification
  • Field 42: Card Acceptor Merchant ID
  • Field 43: Payment Facilitator / Card Acceptor Location Name and Address
  • Field 44: Additional Response Data
  • Field 48: Additional Private Data
  • Field 49: Transaction Currency Code
  • Field 50: Reconciliation Currency Code
  • Field 51: Cardholder Billing Currency Code
  • Field 52: PIN Data
  • Field 53: Security Related Control Information
  • Field 54: Amount, Other
  • Field 55: ICC Data
  • Field 60: Reserved Private Data
  • Field 63: Reserved Private Data III
  • Field 64: MAC
  • Field 74: Number of Refunds
  • Field 75: Number of Cancelled Sales
  • Field 76: Number of Sales
  • Field 77: Number of Cancelled Refunds
  • Field 86: Amount of Refunds
  • Field 87: Amount of Cancelled Sales
  • Field 88: Amount of Sales
  • Field 89: Amount of Cancelled Refunds
  • Field 97: Reconciliation Net Amount

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Copyright© 2022 | Elavon Financial Services DAC. Registered in Ireland – Number 418442.

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. 

Elavon Financial Services DAC, trading as Elavon Merchant Services, is deemed authorised and regulated by the Financial Conduct Authority. Details of the Temporary Permissions Regime, which allows EEA-based firms to operate in the UK for a limited period while seeking full authorisation, are available on the Financial Conduct Authority’s website.