Hi @michael.gyure,
Give this a go.
Multiple Purchases 2 =
VAR t =
FILTER(
ADDCOLUMNS(
VALUES( 'Ecommerce Items'[Buying Company ERP] ),
"@Count", CALCULATE( COUNTROWS( 'Ecommerce Items' ))
), [@Count] >1
)
RETURN
SUMX( t, [@Count] )
I hope this is helpful