1. Access the RE7 database in SQL server
2. Expand the Security > Users folder
3. Delete the user that is being used for the Data Warehouse deployment
4. Redeploy the data warehouse and for the BBETL user, input the domain user that was removed from the RE7 database

This will re-add the user the RE7 data and ensure that the correct permissions are assigned for connecting the BBDM data and the RE7 data source.