Excel read out and filter by two columns

Assign activity
dtResult | DataTable =

(From d in YourOrigDataVar.asEnumerable
Group d by k1=d("Reference").toString.Trim, k2=d("Supplier").toString.Trim into grp=Group
Where grp.Count > 1
From g in grp
Select r=g).CopyToDataTable

Handling Empty results:
:ambulance: :sos: [FirstAid] Handling of The source contains no DataRows exception - News / Tutorials - UiPath Community Forum