Created a enter records in a Grid on a sql table
Entered a name in a char field called NAME
Clicked on submit - worked fine
Added a lookup to the same field, so when you start typing a drop down box opens up.
When I try to save this error keeps coming up :"Function requested is not supported"
I have started from scratch same issue

Removed the lookup
Type in a name in the same field, clicked on submit, error is still there.

I don't know what is going on , I don't have any functions in the grid yet.