Supplier and Customer

Hello

best way to set up parties and relationships. This needs to cover both the supplier and customer – need to confirm that party should be set up based on company registration number and then set up a relationship at party level to cover high end – included the certificate or registration number as a point of reference.  There will be separate customer accounts at Operating Unit level  - need to consolidate sales at ultimate party level.  There could be multiple supplier accounts/sites for different operating units but we would want to see spend at party level and ultimate party level.