In theory you could add one dynamically in the rules that retrieve and save data, although it's a lot of work.
One thing to note is that primary keys are only mentioned in documentation in relation to multi-selection; if you have that enabled, you could try renouncing that and seeing if it removes the problem.
If that's still not working, the only way is to contact Support and/or eventually file on IdeaStream.
Hi guys,
I have the sam problem, I add a primary key, but nothing change.
If I save changes only for one row the error doesn't appear, if I add more than onerow, the error continues to be present.
