The response of the issueFullRefund call indicates the success or failure of the refund operation. Possible results include SUCCESS, FAILED, or AGREED. AGREED is always returned if the refund happens outside of the PayPal system. In this situation, the buyer would need to confirm the refund for the case to be closed. eBay cannot track non-PayPal refunds. FAILED indicates that the refund was not successful and does not indicate that the call failed. If FAILED is returned, it is recommended that the seller make the call again at a later time.