SCA Functional Specification

Revision History

Last updated: 09-Oct-2025
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Revision Date Release Version Change History
11.00 September 30, 2025 SCA Cadence Release: GSC 4.4.12-1/5.0.12-1
  • Application Features: Added a note on UGP & GSC in Pre-Authorization Adjustment feature.
  • POS Messaging Interface:
    • Added DISPLAY_MESSAGE as request field in Secondary port Cancel command.
    • Added PARTNER_ID & CUSTOMER_ID fields in Auth, Capture, Credit & Token query request table.
    • Added CUSTOMER_ID field in Auth, Capture, Credit, Token query & SAF query response table.
10.00 September 15, 2025 SCA Cadence Release: UGP 4.x.42-1/5.x.42-1
  • Overview: Added definition on FSA in Definition of Terms and FSA Transaction in Transaction Supported section.
  • Application Features:
    • Added Multi Merchant Support feature.
    • Added Pre-Authorization Adjustment feature.
    • Updated DCC feature description.
    • Added a bullet point as note on field values in the second leg of the request in Capture Card Early Return feature section.
  • POS Messaging Interface:
    • Added GET_MERCHANT_DETAILS command in Other Administrative section.
    • Added 193 detailed status table of Secondary Port - Status command.
    • Added Multi Merchant transaction details in the following command request: Card Validation, Auth, Capture, Credit, Void, EBT Balance Enquiry, all Gift card and Reports commands, Token Query, Schedule Settlement, Last Transaction and SAF Query response.
    • Added Modifier field in Capture request and response table and ADJUST_AUTHORIZED_DETAILS field in Capture and Last_Trans response table.
    • Updated as “FSA is applicable for Debit and Credit” in Capture and Credit command.
  • Result/Error Codes: Added a result code 59082.
  • Configuration Parameters:
    • Added DEFAULTMERCHANTACCOUNT in Application table.
    • Updated DCCENABLEDCARDMODES parameter description.
9.01 September 12, 2025  
  • Added Feature Parity - Mx9 vs Engage vs Neo section.
  • Protocol details are consolidated with the respective command introduction page for the following sections: Retail and Restaurant, Restaurant/Bar Only, Gift Card Transaction, EBT Transaction, Token Query, Schedule Settlement, Line Item Display and Device Transactions.
  • Added few additional screens for e280, M400, P400 and P200 devices in Display Screen Specifications section.
9.00 July 22, 2025 SCA4 GSC 4.X.11-1/5.0.11-1 Cadence Release
  • Configuration Parameters:
    • Added FLEET parameter in Application table.
    • Added Fleet Card Range Table under Card Range section.
  • Overview:
    • Updated the Definition of Terms table with few new terms.
    • Updated Supported Cards table with Fleet card brands.
    • Added Fleet Card Transactions under Transaction Supported section.
    • Added Pre-Auth and Completion in Check Transactions.
  • Application Features: Added Fleet Card Support section.
  • Protocol Specifications:
    • Added 192 detailed status in Status command.
    • Updated the note for BUTTONx_TEXT_LEFT and BUTTONx_TEXT_RIGHT in Quick Credit Application command.
    • Added Checks transaction request fields in Auth command.
    • Added Sample Request and Response for Check in Auth command.
    • Updated the values for CHECK_TYPE field in Capture request table.
    • Added CHECK (only for Completion transaction) as Payment type in Capture request table.
    • Added Sample Request and Response for Check (Completion) in Capture command.
    • Added Request and Response fields and examples on Fleet Card Transaction in Auth, Capture, Credit and Void commands.
8.01 July 07, 2025  
  • Updated Device UI section for protocol section.
8.00 June 20, 2025 SCA4 WP 4.X.20-1 Release
  • Media and Display Screens Specifications:
    • Updated Media File - Size and Formats section with Neo2 Devices Screen Resolution and Media Files Location.
    • Updated Display Screen Specifications section with M425-A - User Interface.
  • Protocol Specifications: Added notes specific to e235 device in the following commands: Display Message, Checkbox, Customer Question, Credit App, Survey, Survey5, Survey10, Display Image, Get Card Data, Customer Button and Display QR Code, Line Items – ADD, OVERRIDE and REMOVE.
7.00 May 15, 2025 SCA4 FDRC 4.0.28-1 Cadence Release
  • Configuration Parameters:
    • Added MAXTIPAMOUNT and MERCHPYMTGTWYID parameters in Application table.
    • Added ENABLERVERVAL parameter in FDRC parameters table.
  • Application Features: Added Excess Tip Confirmation section.
  • Protocol Specifications:
    • Added 191 detailed status in Status command.
    • Added a note on DISPLAY_TEXT4 and DISPLAY_TEXT5 for e235 devices in Custom Buttons command.
6.01 March 31, 2025 SCA4 UGP 4.x.41-1 Cadence Release
  • Configuration Parameters:
    • Added HEALTHMONITOR, HEALTHMONITOR_EXCLCMDS and SCAPERFMETRIC parameters in Application table.
    • Updated DEBITREFUNDPIN parameter description with Refund EBT CTLS details.
    • Corrected the parameter name from ADJCAPBLE to ADJCAPABLE in Worldpay table.
  • Application Features: Added Transaction Performance Metric section and Health Monitor Events section.
  • Protocol Specifications:
    • Added Transaction Performance Metric section with UI_TIME, HOST_TIME, CMD_TIME and CP_TIME fields in all command response table.
    • Added CARD_ABBRV field description in Capture command response table.
    • Added POS_RECON field in all commands.
6.00 January 17, 2025 SCA4 UGP 4.x.40-1 Cadence Release
  • Configuration Parameters: Added ALLOWDCCTOSAF and TIPTRANSTYPES parameters in Application table. Added a note in DCCENABLEDTRANSTYPES parameters in DCC table.
  • Application Features: Added a bullet point note on using different Card token for 2nd leg transaction in Capture Card Early Return section.
  • Protocol Specifications:
    • Added DCC transaction fields in SAF Query response table.
    • Added DCC_IND field with value 2 and 3 in Capture and Auth request table.
    • Added Value 3 for DCC_IND field in Refund Request table.
    • Added DCC_IND field in Auth, Capture and Credit Response table.
    • Added UGP values for SCMCI_INDICATOR field in Card Validation, Auth, Capture request command.
    • Added SCMCI_REASON field in Card Validation, Auth, Capture request command.
    • Added value F for UGP in INSTALLMENT and RECURRING fields in Auth and Capture request table.
    • Added a note for COF_REFERENCE in Card Validation, Auth, Capture request and response command.
5.00 January 03, 2025 SCA4 UGP VOS3 5.0.38-1 Cadence Release
  • Configuration Parameters: Added a new value to SIGIMAGETYPE parameter.
  • Application Features: Added <EMV_TAGS_REQD> and <EMV_TAGS> in Capture Card Early Return.
  • Protocol Specifications:
    • Added new value in MIME_TYPES field of Signature and SignatureEx commands.
    • Added new value in TIMEOUT_DATA field of Display Message commands.
    • Added EMV_TAGS_REQD field for Auth, Capture, Credit and Gift command request.
    • Added EMV_TAGS field for Auth, Capture, Credit and Gift command response.
    • Added IMAGE_NAME field in Display Image command request.
    • Added CMRCL_FLAG field in Auth and Capture response.
    • Added FORMATTED_DISPLAY_TEXT field in Signature and SignatureEx commands.
    • Updated the max length to 16 for all fields in Bottom Button section of Customer Question command.
4.00 December 06, 2024 SCA4 WP 4.x.18-1 Protocol Specifications: Added AUTH_REF_NUMBER field, applicable for the following command responses: Card Validation, Auth, Capture, Credit, Void, Add Tip, Reset Tip, Open Tab, Close Tab, Delete Tab, Gift - Activate, Gift - Block Activate, Gift - Reactivate, Gift - Deactivate, Gift - Add value, Gift - Close, Gift - Balance Inquiry and Token Query.
3.00 November 20, 2024 SCA4 UGP 4.x.39-1
  • Application Features: Added Application Alerts to VHQ feature section.
  • Protocol Specifications:
    • Updated the note for PROMPT_ENCRYPT with CREDITAPPDATAENCRYPTTYPE parameter details.
    • Updated the note for PROMO_PLAN_EXP_DATE in Auth, Capture and Credit command.
    • Updated SAF EDIT command.
    • Updated description of NOT_PROCESSED status is SAF Query and SAF Remove request table.
    • Added CARD_PRESENT field in Card validation, Capture, Credit and Balance Inquiry commands.
    • Added AVAILABLE_BALANCE response field in Card validation and Token Query command and updated AVAILABLE_BALANCE description in Auth, Capture, Credit, Void and all Gift commands.
    • Added COL_3 to COL_10 field in request and response table for all payment commands.
    • Added note on Neo device in ADD and OVERRIDE Line Item commands and added Displaying Line-Item Fields on Device table in Line Item Display ADD command.
  • Result/Error Codes: Updated 59053 description with example.
  • Configuration Parameters:
    • Added MAXSAFDECLINERETRY in SAF table, RETURNCARDHOLDER in Application table, GIFTPARTIALAUTH parameter in UGP table and CREDITAPPDATAENCRYPTTYPE parameter with its supported values table.
    • Updated the description for DOADMREQ, DOADMREQPINPAD, SIGNATURELIMIT parameters.
    • Added a note in SAFPURGEDAYS parameter and updated PROMOEXPIRYDATE parameter note.
2.00 November 11, 2024 SCA4 WP 4.x.18-1
  • Configuration Parameters:
    • Added the following parameters in Worldpay table: PLCCSALEALLOWED, PLCCPROMOCODE, PLCCSALEPW, DEBITOPTIMIZATION.
    • Added DISABLEPLDEBITFORSAF parameter in Application table.
    • Added INTERFACETIMEOUT parameter in GPRS, LAN and WLAN Interfaces tables.
  • Overview: Added PLCC in Definition Of Terms table.
  • Application Features: Added Debit Optimization section.
  • Protocol Specifications:
    • Added PROMO_NEEDED field in Capture, Credit and Void commands request and response tables.
    • Added EMV_TAG_9FA081 tag as example in Capture command Response (EMV) and Last Transaction Response.
    • Added HOST_PAYTYPE field in Capture, Credit and Void commands response table.
1.00 October 30, 2024   First version published.
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