Hi All,
Thanks for your reply.
I was getting #multivalue error as some plants had 1 timestamp and some had 2. So both the conditions were satisfied and it could'nt put it in a single cell.
So I created a variable : Multiple Timestamp =If(Count([Timestamp];Distinct) > 1) Then 1 Else 0
And nother Variable Messgae :=If (Sum([ Multiple ITU] ForEach ([Plant])In ([Plant])) = 0) Then " " Else "Warning: Multiple Timestamp Exists"
Worked fine:)