User receives the error/warning in the front end of Team Approach:
unable to resolve reference to item. MAIN.TITLE
This is a fairly fundamental error that could occur anywhere. What it means is that the current sub-form has lost its ability to connect to the master form (which is the form that contains ALL the sub-forms).
If this is only happening for one user, have them log all the way out of Team Approach and then log back in.
If it is happening to many users (using the same forms), please contact Team Approach Support.