Hi @llllllkt99
Read both data into two datatables using read range
Use for loop on second sheet datatable and inside use filter datatable to filter sheet1 datatable with the required values
In filter give column name as ‘identity number’ and value as currentrow(‘identity number’).tostring
Use if to check the row count after filter. Dt.rowscount if this is greater than zero then rou have match else no match
Cheers