https://community.developer.cybersource.com/t5/Integration-and-Testing/Card-present-integration-MagTek-DynaFlex-II-DUKPT-encrypted-data/m-p/95121#M58762 <P>"I'm integrating card-present transactions using a MagTek DynaFlex II SCR (SRED/DUKPT encrypted). I want to send the encrypted payload via createTransactionRequest using opaqueData. Can someone confirm: (1) what dataDescriptor value to use for MagTek DUKPT-encrypted data, (2) whether the encrypted track data from MagneSafe goes in dataValue as-is or needs reformatting, and (3) whether sandbox accepts test encrypted payloads or only works with live reader output? I have a sandbox account and the MagTek SDK."</P><P>Thanks in advance for any help.</P><P>Darren</P> Fri, 17 Apr 2026 13:14:37 GMT Darrenmv24 2026-04-17T13:14:37Z https://community.developer.cybersource.com/t5/Integration-and-Testing/Card-present-integration-MagTek-DynaFlex-II-DUKPT-encrypted-data/m-p/95121#M58762 <P>"I'm integrating card-present transactions using a MagTek DynaFlex II SCR (SRED/DUKPT encrypted). I want to send the encrypted payload via createTransactionRequest using opaqueData. Can someone confirm: (1) what dataDescriptor value to use for MagTek DUKPT-encrypted data, (2) whether the encrypted track data from MagneSafe goes in dataValue as-is or needs reformatting, and (3) whether sandbox accepts test encrypted payloads or only works with live reader output? I have a sandbox account and the MagTek SDK."</P><P>Thanks in advance for any help.</P><P>Darren</P> Fri, 17 Apr 2026 13:14:37 GMT https://community.developer.cybersource.com/t5/Integration-and-Testing/Card-present-integration-MagTek-DynaFlex-II-DUKPT-encrypted-data/m-p/95121#M58762 Darrenmv24 2026-04-17T13:14:37Z