Diagnosis
There is no automatic connection between the vendor and the businesspartner. For this reason, you have to create a vendor in FI before youcan assign it. Only then can you assign the vendor to the businesspartner in the general (role-dependent) data on the control tab page, inthe account control subscreen (view). If the vendor assigned to abusiness partner is created in a company code, the vendor indicator onthe Control tab page is set automatically.