ShipGear allows you to ship against Amazon Marketplace orders and write shipment and/or tracking information back to the Amazon order. ShipGear currently supports the Amazon US Marketplace only.
To be eligible to use Amazon MWS, you must have one of the following types of accounts with Amazon :
Sellers with only individual Selling on Amazon accounts are not eligible to register for or use MWS. If you are an individual seller and would like to use MWS, you can upgrade to a Professional seller account from the Amazon Services Selling on Amazon page.