Thanks for the quick response! My worksheet appears to be grouping and sorting (for the most part) the Concatenation field. I don't know why as I have no sorts or As a result, everything is coming up as "True". Is there perhaps a better way to do this function? I am not set on any method...I'm merely porting our current method from Excel to Tableau.
The Concatenation field is:
(str([Order No]))+(str([Item No]))+(str([PO Item Sequence]))+(str([Blanket Seq]))
All we're looking to do is find the first time a part was received from every PO that was scheduled to arrive in a given month. This is necessary to calculate how late the supplier is.