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SB n° 277: Try Another Interface – Terminal Behavior

v1.0 Specification Bulletins
Contactless Acceptance Device

EMV® Specification Bulletin No. 277 First Edition, October 2022 Try Another Interface - Terminal Behavior This Specification Bulletin describes changes to EMV Contactless Book A.

Applicability

This Specification Bulletin applies to:

  • EMV® Contactless Specifications for Payment Systems, Book A, Architecture and General Requirements, Version 2.10, March 2021

Related Documents

None

Effective Date

Immediate

Description

The Try Another Interface outcome is returned by the kernel to indicate that the transaction should be attempted on another interface, such as the contact chip or magnetic stripe interface. When the Try Another Interface outcome is received by the terminal, the terminal advises the cardholder that another interface may be used and the terminal must not require that the merchant have to re-enter the transaction amount. © 2022

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Specification Changes In Table 6-3 and Table 6-4, update the entries for Try Another Interface as follows: Try Another Interface

  • The terminal allows the transaction to be attempted on another interface – contact chip or mag-stripe according to its capabilities. If a preference is indicated in the Outcome, then (depending on payment system rules) this might need to be taken into account.
  • The POS System advises the cardholder that another interface might be used. An initial message to the cardholder might have been displayed as a result of including a User Interface Request with the Outcome.
  • The transaction details (e.g., transaction amount) are known to the terminal and the transaction is completed on the same device. In this case the merchant must not be required to reenter the transaction details to perform the transaction over the other interface.
  • The terminal processes the transaction using the other interface and might use the ADF Name provided with the Outcome to seek to select the same application if the chip interface is used. Cardholder communication will be as per the normal processing for a chip or mag-stripe interface.
  • Once complete, continue with ‘Requirements – New Transaction Preparation and Start’ on 9. © 2023 countries.

Legal Notice

The EMV® Specifications are provided “AS IS” without warranties of any kind, and EMVCo neither assumes nor accepts any liability for any errors or omissions contained in these Specifications. EMVCO DISCLAIMS ALL REPRESENTATIONS AND WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT, AS TO THESE SPECIFICATIONS. EMVCo makes no representations or warranties with respect to intellectual property rights of any third parties in or in relation to the Specifications. EMVCo undertakes no responsibility to determine whether any implementation of the EMV® Specifications may violate, infringe, or otherwise exercise the patent, copyright, trademark, trade secret, know-how, or other intellectual property rights of third parties, and thus any person who implements any part of the EMV® Specifications should consult an intellectual property attorney before any such implementation. Without limiting the foregoing, the Specifications may provide for the use of public key encryption and other technology, which may be the subject matter of patents in several countries. Any party seeking to implement these Specifications is solely responsible for determining whether its activities require a license to any such technology, including for patents on public key encryption technology. EMVCo shall not be liable under any theory for any party’s infringement of any intellectual property rights in connection with the EMV® Specifications © 2023

countries.

Legal Notice The EMV® Specifications are provided “AS IS” without warranties of any kind, and EMVCo neither assumes nor accepts any liability for any errors or omissions contained in these Specifications. EMVCO DISCLAIMS ALL REPRESENTATIONS AND WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT, AS TO THESE SPECIFICATIONS. EMVCo makes no representations or warranties with respect to intellectual property rights of any third parties in or in relation to the Specifications. EMVCo undertakes no responsibility to determine whether any implementation of the EMV® Specifications may violate, infringe, or otherwise exercise the patent, copyright, trademark, trade secret, know-how, or other intellectual property rights of third parties, and thus any person who implements any part of the EMV® Specifications should consult an intellectual property attorney before any such implementation. Without limiting the foregoing, the Specifications may provide for the use of public key encryption and other technology, which may be the subject matter of patents in several countries. Any party seeking to implement these Specifications is solely responsible for determining whether its activities require a license to any such technology, including for patents on public key encryption technology. EMVCo shall not be liable under any theory for any party’s infringement of any intellectual property rights in connection with the EMV® Specifications © 2023

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