Ability to use Line Number as the List Member when Importing from Excel/Google Sheets

There are times when we are importing data that Anaplan recognizes a row of data as a duplicate, but the duplicated data has meaning to our end users. Anaplan is able to tell us in the error message which line of data the duplicate was on. Is it possible to create an option to use the row number as the list member to avoid Anaplan flagging our data as a duplicate? This would work well when bringing in raw data into our models.