title: Data source for MasterCard EMV tag 9F7E - Application Life Cycle Data
body: <p>I'm working on a profile for MasterCard EMV cards on M/Chip Select 4 version 1.1a, and I need some help understanding the data elements for the <strong>9F7E (Application Life Cycle Data)</strong> tag value. Unfortunately, the MasterCard manuals do not explain this tag's purpose nor the corresponding data elements very well. </p>
  
  <p>I understand from the manuals that the first byte is for the version number - easy enough. However, the other 47 bytes represent data elements I'm not familiar with, such as "Type Approval ID", "Application Issuer ID", and "Application Code ID."</p>
  
  <p>Are these data values generated during transaction processing, or are they static values residing on the card?</p>