Delivery Order billed more than once from VF04
I have a sales document type which is relevant for Intercompany billing. The normal process would be from SO to DO then billing based on DO and intercompany billing based from DO.
I have a situation when user billed the DO from VF04.
After selecting 1 line then process billing and save, if the user process the same line again another billing document will be generated, and again again and again if the user doesn't exit the VF04.
If I bill from VF01, that such thing won't happen. because the second time i want to bill the same DO, intercompany billing will be generated instead of regular billing.
Also, if the sales document is not relevant to intercompany billing then such thing won't happen, because after billing DO status is complete.
Do you have any idea what's wrong? Or maybe SAP bugs?