MasterCard / EMV Tags - Detail Definition

Question

I'm working on a project that requires me to parse the EMV data tags that I receive from a MasterCard purchase transaction. I'm using the EMV V4.3 Books from EMVCo and have access to the MasterCard documentation via MasterCard Connect.

I need to find the official documentation that details the definition of each tag.

For example: Tag 9F10 (Issuer Application Data).

• Byte 1 represents the Key Derivation Index
• Byte 2 represents the Crypto Version Number
• Byte 3 to Byte 8 represents the Card Verification Results

The EMVCo books detail some of the tags but not all. Can anyone point me to the correct documentation to use?

Much appreciated

Regards, Dev

Answer 1

Download M/Chip Requirements—For Contact and Contactless • 29 September 2016 and then read section Appendix B Analysis of DE 55

This has list of mandatory and optional tags you will receive in a MasterCard online transaction and has detailed explanation of tags, its data, and sub elements. It also has explanation for each Bit wherever applicable. Enjoy!!