Is there a way to display the validation problem (or a fact) of a column inside a cell (or at least on the row). Or is there some heuristic that enables a row-level validation marker.
When using the default validation service on a value property within a list property: In the UI its hard to identify the cell ( or row) to which the problem belongs. Right now the user has to identify the cell on its own by looking at the message, that hopefully tells him the column and row identifier.
If there is an image associated with your list entry element (@Image or ImageService), the image will be shown in the table property editor and row's validation overlaid on it. There is no support for cell-level validation display.