Have testing with try and error to find out a way to get the required functionality to “make the fields only editable through the action”.
I believe there should be far better way, very courious how app creators are manageing. Welcome to hear your tricks.
What I wanted to control the fileds setting is to let a filed to be “editable” by action only. When the app user open up form view, then they are not able to edit, but the field value is viewable only. But through appsheet action, the field are editable.
I simply add
to EDITIF constrain and eventually I got the required result.