{=IFNA(INDEX(PO[Price],MATCH([@[SO Date]]&[@[User Name]]&[@[Item No.]]&[@[SO Qty]],PO[Posting Date]&PO[User Name]&PO[Item No.]&PO[Quantity],0)),INDEX(PO[Price],MATCH([@[Item No.]]&[@[Cost Exact Match]],PO[Item No.]&PO[Sales Exact Match],0)))}
My formula works but I know it should be written...