I am using BAPI_BUPA_CREATE_FROM_DATA to create Business Partner. Then I am using BAPI_BUPA_ROLE_ADD2 to provide the role as 'Contract Partner'. When I am executing this, a runtime error showing as 'enter external customer number'. How can I provide the external customer number (ex. 1300000001) to it ? Suggest some ways. I am creating the Business Partner for a Person.