In the Trados Enterprise, Fields not appearing in the Update Translation Memory Fields settings of the Project Template - 

• There will a missing Translation Memory(TM) under Translation Engine Tab at the Project Template and we should add the respective Translation Memory(TM) over there and save it.
• Once you add the respective TM(s), you will see the the Fields from the Update Translation Memory Fields settings.

              - These Fields or Field Template will appear by selecting the Field Template in the Translation Memory(TM).

              - All TMs have a selected Field Template, which determines the Fields or Field definitions. These fields will then appear under the Update Translation Memory Fields settings.