STEP 1:
Find your requisition eDoc in your Procurement Gateway: https://gateway.procurement.cornell.edu/
STEP 2:
Open your eDoc by clicking on the 8-digit eDoc number to this screen

STEP 3:
Scroll to Vendor Address and Vendor Information.
If no email address displays, click the Vendor # to get the correct information.
You are looking for a customer service type email


STEP 4:
Scroll to VIEW RELATED DOCUMENTS and expand the box to get your purchase order number

STEP 5:
Write an email to the vendor customer service address; write "Request RMA - PO 1757939" in the subject line.
You just need a very brief note in the body saying you want to return x items from your 13-Aug PO#.
They should then reply with instructions or a customer service rep will write to ask for more details