An RMA is used as an authorization for return. RMAs help the sellers to keep an organized record of their returns and allows the customer to return the item(s) with a reference number to the fulfilment center or warehouse. Disclaimer Our content is not in any way legal advice or binding. The information provided by might not be the official legal or full definition. Also when pursuing a specific transaction you are encouraged to conduct your own due diligence and to consult legal counsel as appropriate.