Error 18034

The requested refund has multiple return requests from different customers associated with it. For help on how to proceed, see https://sellercentral.amazon.com/gp/help/201756950

This error occurs when one or more gift returns have been submitted for the same item. To complete this refund to the right customer, go to Manage Returns, and issue a refund to the customer who provides the item's Return Merchandise Authorization (RMA).