Hello Everyone,
I want to apply a validation on a multi punch grid where if one and only one answer selected at each row or one and only one answer selected at each row, we need to show error message the very first time. If respondent still wants to continue with the same response in grid, they are allowed to do so.
I am facing below challenges. let us know if anyone has any suggestion on this..

1. Unable to identify a simple way to check counts of response answered at each row.


2. Does not think that it will be feasible to show error message just once and for next time allow respondent to continue.