com.amazonservices.mws.client.MwsException: A create request already exists for MerchantFulfillmentOrderId

This happens when a multichannel order is sent to FBA to create a shipment but some reason it fails.  When you try to re-create the multichannel FBA shipment again for the same order with the same order id, this error comes as Amazon recognises that the order is already received from a previous request.


In order to resolve this issue, please append -1 for the  order id in the below input field and submit again. 



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