Rebate Volume Postings and Subsequent File Production

Question

Vendors are set up in SAP as suppliers and given a certain number range . We call these the purchasing vendors.
The purchasing vendor represents a very big company (like ABCD) that has manufacturing plants all across regions with head offices in one location.
Buyers place the order at the head office level therefore - to the purchasing vendor.
But the goods ordered are likely delivered from a manufacturing location (not the head office) - a sub-provider, if you will, of Boeing.
Then the invoice for the goods supplied are likely received from yet another location such as a shared service organization of the supplying company.
In order not to have to create 3 separate vendors in this case, to track these activities; one main vendor is created (the purchasing vendor) and the remit- to vendor (that vendor which sent us the invoice and to which we will send our payment) is added as a "partner" on the purchasing vendor ( as is the sending vendor and the contact vendor and any number of other relational vendors) that all tie back to the Boeing purchasing vendor in different partnerships.
When we process purchase orders in SAP, the purchasing vendor is on the PO. Based on the partners defined on that vendor, the account posting for the invoice when the goods are received goes to the remit-to vendor. That is when accounting knows we owe a vendor for supplies - based on the balance on their remit-to  vendors.
My issue: The volumes that are getting updated via rebate settlement are getting added to the purchasing vendor number - so accounting has a vendor  that has charged us for goods; but the volumes are being posted to another vendor entirely.
In order to settle the rebates, accounting has to take the unpaid balance of the vendor and net it against what we are owed as a rebate. If the volumes are not updating this vendor, we have no way of tying our rebate to that vendor. It is sitting on the purchasing vendor (which accounting does not make any payments to and therefore cannot post a rebate to).

Answer 1

Rebate Recipients are Payer accounts, however when you config the Rebate pricing Procedure you can create key combinations associated with the Sold-to. In this way if you have a number of customers with a central Payer, you can crate the condition records by Sold-to for the relevant rates, amounts, percentages etc, as long as they have the same Payer, then the Rebatable volumes will accrue based on Sold-to's. This also has the benefit of being able to differentiate your Rebate rates based on the Sold-to, e.g. one customer within a specific group may be incentivised more (or less) than another, even if they have the same Payer. In this way you can get greater granularity and flexibility with your Rebates.
Cheers,
Paul...