Sales Intercompany with WBS Element - VF156 error

Greetings,

I person an intercompany work income scenario, that is, a works successful the radical sells a work to the customer, but it volition beryllium different works successful the radical that volition supply the service.

I judge that the occupation is successful the accounting of the WBS constituent that is assigned to the plant. As the income bid VA01 is assigned to a income organization/company, but the point was assigned to the works that volition supply the service, erstwhile trying to invoice the income bid I get the error:

The SAP Note 672929 already described successful different topics near maine with much questions than answers. What should beryllium done?
Should the SAP PS advisor configure it truthful that erstwhile it is an Intercompany process, the outgo accounting does not hap successful the WBS element, but successful a higher structure?

Thanks successful beforehand