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NEO 2 Interface Developer’s Guide
Copyright © 2019, International Technologies & Systems Corporation. All rights reserved.
232
Failed Transaction-- Plaintext and Encrypted data field format (02-40)
Data Item
Length
(bytes)
Description
Attribution
1
Bit 4/3/0: Captured Data Type
0 0 0 = Contact Transaction
0 0 1 = Contactless Transaction / EMV
1 0 1 = Contactless Transaction / MSD
0 1 x = MSR Card
Bit 2/1: Encryption Mode
0 0 = TDES
0 1 = AES
1 x = Reserved
Bit 5: Reserved for Attribution Byte Extension.
Bit 6/7: Encryption Status
0 0 = MSR/MSD off, EMV off
0 1 = MSR/MSD off, EMV on
1 0 = MSR/MSD on, EMV off
1 1 = MSR/MSD on, EMV on
TLV KSN
(DFEE12)
Variable
KSN of DUKPT Account Key
Tag: DFEE12 Format: Binary, 10 bytes
If encrypt disable or MSR data, this tag is not present.
TLV Contactless
Error Code Table
(FFEE1F)
Variable
Byte 1: Error Code.
(Error Code giving the reason for the failure.)
Byte 2: SW1
(Value of SW1 returned by the Card (SW1SW2 is 0000 if SW1 SW2 not
available))
Byte 3: SW2
(Value of SW2 returned by the Card (SW1SW2 is 0000 if SW1 SW2 not
available))
Byte 4: RF State Code
(RF State Code indicating exactly where the error occurred in the Reader-
Card transaction flow.)
TLV Data
Variable
Refer to the Activate Response TLVs.
Sensitive TLV will be TDES/AES encrypted with Padding (0x00)
See “80000502-001, ID Tech Encrypted Data Output Formats” for details;
available for download on the