First you will want to download the group sales contract header file if you don't currently have it saved.
  1. Go to Marketing and Communications > Letter Template Library
  2. Under Tasks on the left side of the page, click Generate Header File
  3. Choose Group Sales Contract for the Letter Type and click OK to download the header file
When you perform your mail merge with the header file, you will see a merge field labeled "ITINGT1". This field will pull the group type for your itinerary in to the contract. You can also include the " ITINGT2", " ITINGT3", and " ITINGT4" merge fields to pull the group type for any additional itineraries that you may have on your group sale reservation.