DMR Reject Process...need guidance

Epicor 9.05.702A
Need some assistance with the Quality process with the E9 Quality Module. Once the Inspector submits the DMR to the Buyer, the Buyer requests the RMA from the Supplier. The PO, Reason Code, Non Conformance or the Job # are not on the DMR Processing screen until the material is rejected. We can not reject the material until we receive the RMA from the supplier, but we need the PO# and Reason Code in order to submit the RMA. How is it best to handle this?  What are some other companies doing to handle this?
 
THanks