The RPT2 was ordered by YANYA1, however it is running at QIXIQX now. YANYA1 and QIXQIX belong to the same company. The contract was signed with QIXQIX. If QIXQIX insists the service should be billed to QIXIQX then I expect there will be a lot of things to be corrected. It might be easy to keep YNAYA1 in the IFS, I just manually re-edit the invoice to make it accepted by customer.