Not default Primary Salesperson in Sales order header from Customer master DFF

Summary:

Error shown as below Sales Order save time:

The Default SalesPerson extension during the On Save event couldn't be completed. oracle.jbo.NoDefException: JBO-25058: Definition salesperson of type Attribute is not found in oracle_apps_contracts_publicView_ContractCustAccountSiteWOUsePVO.. (DOO-2685874)

We have a requirement when customer information is entered on sales order, then sales person should automatically default on order header> Primary Salesperson field from a customer account at site use bill to / ship to level. This DFF stores the sales person.  (We had to open a DFF for sales person as there is no standard field on customer for storing sales person)