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SCA Functional Specification

VERSION

Last updated: 07-Apr-2025

This command retrieves version information for all applications running on the payment device that are components of Point SCA.

Device UI Required: No

Request Packet
Field Rule Type Minimum Maximum Value(s) Description
FUNCTION_TYPE Required Static value N/A N/A DEVICE Type of function
COMMAND Required Static value N/A N/A VERSION Command name
DISPLAY_VERSION Optional Numeric 1 1 0 – Default
1 – Display System Information for SYSINFOINTERVAL (Application Parameters)
This is to display the retrieved version.
POS_RECON Optional Character 1 30   POS reconciliation. POS Reconciliation field to be echoed back in response to POS. Example: RetailPOS1
COUNTER Required Numeric 1 10   COUNTER is used for a given MAC label. Each COUNTER should be higher than the last one. This is sed to authenticate the POS. Example: 7
MAC Required Base64 Encoded Data N/A N/A N/A Message Authentication Code. This is used to authenticate the POS.
MAC_LABEL Required Character 1 50   Associated label that tells the device which MAC_KEY to use to decrypt the value of MAC. This is used to authenticate the POS. Example: REG1
Example

Following is an example of request packet

<TRANSACTION>
    <FUNCTION_TYPE>DEVICE</FUNCTION_TYPE>
    <COMMAND>VERSION</COMMAND>
    <DISPLAY_VERSION>0</DISPLAY_VERSION> //0 – Terminal will not display system information         screen when the command is received
    //1 - Terminal will display system information screen when the command is received
    <COUNTER>7</COUNTER>
    <MAC></MAC>
    <MAC_LABEL>REG2</MAC_LABEL>
    </TRANSACTION>
VERSION_INFO (Engage) Example
<VERSION_INFO>SCA-FDRC_VER=4.0.5-39|NAFG_VER=Vos-4.0.2-5|CAM_VER=19.01.06|ADK_VER=4.4.3-128</VERSION_INFO>
Response Packet
Field Type Value Description
RESPONSE_TEXT Character   Processor response text. Example: Version Information Captured or MSG_VERSION_CAPTURED (Vantiv Direct)
RESULT Character   This indicates the Result details. Example: OK
RESULT_CODE Numeric Expected result code: -1, 59006, 59040 This indicates the result code. Refer to Result/Error Codes for details.
TERMINATION_STATUS Character SUCCESS or FAILURE This indicates the transaction termination status. This is the overall status of the transaction irrespective of approved or declined. Like, if the output is generated then the status is SUCCESS and if no output is generated then the status will be FAILURE.
VERSION_INFO Character   Version information for all applications running on the payment device. Engage VERSION_INFO will differ. See Example Response section below. Example: SCA_VER=V_4.0.1-13-vrx|CAM_VER=V_290A11|VXCI_VER=V_360Z|VXCOM_VER=V_540|VMAC_VER=V_2.6.4|COM_VER=V_2.5.3-137|SEC_VER=V_1.4.6-541|UGP_VER=V_1.1.0-01|NAFG_VER=V_1.0.0-19
POS_RECON Character   POS reconciliation field echoed back if sent in request. Example: RetailPOS1
COUNTER Numeric   Echoes counter sent in the request. Example: 7

Transaction Performance Metric

  

Note

These fields are returned, if SCAPERFMETRIC parameter (Application Parameters) is enabled.

Field Type Value Description
UI_TIME Time   This indicates the time duration, for which the device screen is displayed (like error message, prompt screen, remove card screen) till any user action is performed in the command execution flow. This field is not applicable to capture the time for the Processing, Authorizing and transaction status screen. The format of the returned value would be S.sss, where S is seconds (this can be 0 to any positive integer) and sss is milliseconds. In case of any insignificant time or 0.000 value, will not be returned in the response. Example: <UI_TIME>44.028</UI_TIME>
HOST_TIME Time   This indicates the time taken for the Connection to the host, sending request and receives data from the host. This field also take the cumulative time for multiple requests which may sent to the host during the transaction including two legged transactions, timeout requests, Auto Last Tran requests, DCC, Credit app proxy. The format of the returned value would be S.sss, where S is seconds (this can be 0 to any positive integer) and sss is milliseconds. In case of any insignificant time or 0.000 value, will not be returned in the response. Example: <HOST_TIME>1.389</HOST_TIME>
CMD_TIME Time   This field indicates the total amount of time for a command, which is executed by the application from request received to the response sent. The format of the returned value would be S.sss, where S is seconds (this can be 0 to any positive integer) and sss is milliseconds. In case of any insignificant time or 0.000 value, will not be returned in the response. Example: <CMD_TIME>70.765</CMD_TIME>
Example

Following is an example of response packet

<RESPONSE>
    <RESPONSE_TEXT>Version Information Captured</RESPONSE_TEXT>
    <RESULT>OK</RESULT>
    <RESULT_CODE>-1</RESULT_CODE>
    <TERMINATION_STATUS>SUCCESS</TERMINATION_STATUS>
    <VERSION_INFO> SCA_VER=V_4.0.1-13-vrx|CAM_VER=V_290A11|VXCI_VER=V_360Z|VXCOM_VER=V_540|VMAC_VER=V_2.6.4|COM_VER=V_2.5.3-137|SEC_VER=V_1.4.6-541|UGP_VER=V_1.1.0-01|NAFG_VER=V_1.0.0-19</VERSION_INFO>
    </RESPONSE>

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