@Steven_Coile Your suggestion almost works. I created a virtual column: Column Name is KEY Type is TEXT App formula is UNIQUEID() and made it the key to the table Then added the VALID_IF expression you suggested to the NAME column: =not(in([_this], s...

@Philip_Garrett_Appsh I made the 'Name" the key as recommended and tried your expression, =COUNT(SELECT(Items[Name], AND([Name] = [_THIS], [Name]<> [_THISROW].[Name]))) = 0 It does allow updates to the row, but it does not allow the name to be edited...

Works like a charm. Thank you @Steven_Coile and @Philip_Garrett_Appsh!!!

@Philip_Garrett_Appsh. So, I should be able to set up an actual column with an initial value of UNIQUEID(), hide the column, and make it a key? Then the key would be auto generated, couldn’t be edited, and not show up in the views. Then I would use @...