Is there any on screen and out of transition (workflow) validation

DYlanJYzhANG

On the 'view' screen, it seems like we can edit some field freely. i.e. the due date.

 

However, I would like to make the user to provide a justification (i.e. a pre-formatted comment) every time they change the due date on screen (without any transition, hence no transition validation can be done). Is it possible?

Nic Brough -Adaptavist-

I can't think of a way to do this without forcing a transition!  The whole point of in-line edit is that it's a simple and quick way to change data.