This error comes up when you are using FBA US to ship to an international location. Amazon FBA documentation states that shipments to countries outside of the US require a value declaration.
Not every product can be sent by FBA Export. You will need to check to see if the product is approved for FBA Export. You can not request products be added. Amazon only approves products they choose. If a product is not approved for FBA Export, it can not be shipped by Amazon out of the country and you would need to ship it from a different warehouse.
