Error fulfilling with FBA: The request must contain the parameter PerUnitDeclaredValue
You might see this error message when trying to fulfill a Shopify order with Amazon.
This error message is returned if you try to send a shipment to an APO address (Army Post Office). Currently Amazon does not support fulfilling to overseas army bases and just returns this generic error message.
In this case, we recommend re-routing the order to a non-FBA warehouse and fulfilling it that way. If you are unable to fulfill the order, you can cancel the order through Zentail.