When I copy columns in the SF it also copies the value of "Identity". I cannot imagine a situation where you want to have two columns with the same name with "identity" = 1 on different tables / views.
In what situation would you want this to be possible?
Best answer by Jeroen van den Belt
You want this to be possible because the GUI/Indicium must be signalled that the concerning field in the view is an auto numbering field. It needs this information so that after adding a record, it can retrieve the correct value in the right way.
You can do this by setting the identity checkbox for the corresponding column in the view, which in this case is already done since you were copying the column.