title: EDI 864 : How to identify parent file type? (810, 856 or any other)
body: <p>I am implementing EDI (*.X12) in my application.
  864 file is the file type for message exchange.
  It can be used in response to any file sent from my application to my client's application.</p>
  
  <p>For example:
  I am sending 810 file to my client. If file has any issue with file, client will send me back 864 file with error message.</p>
  
  <p>Same can be possible for 856 or any other file from my application to my client's application.</p>
  
  <p>So How can I identify the original file type (810, 856 or any other) from received 864?</p>
  
  <p>Like : In case of received 997 we get original file type under AK2.</p>
  
  <p>Thanks In Advance.</p>