Q: What is Amazon Marketplace Web Service (Amazon MWS)? Link Amazon Marketplace Web Service (Amazon MWS) is an integrated Web service API that helps Amazon sellers to programmatically exchange data on listings, orders, payments, reports, and more. XML data integration with Amazon enables higher levels of selling automation, which helps sellers grow their business. By using Amazon MWS, sellers can increase selling efficiency, reduce labour requirements, and improve response time to customers.  

Login to your Amazon account and Go to Settings -> Click on Account Info and Click on User Permissions -

Sometime you see login page like below, If not then move to next step -

Scroll Down and find "Third-Party developer and apps" and click on Visit Manage Your Apps

On "Manage your apps" page click on Authorise new Developer Button and it will open in new window/tab

On Amazon MWS page you have to entre Developer details -

Developer Name : OMS

Developer ID2569-0711-1248 OR 256907111248

And Click Next Button

On Next page you have to accept the amazon MWS  Agreement and access permission authorise. Check mark both both checkbox and click next - 

On next page you will receive the Seller ID and MWS Authorisation Token

Support Ticket System By Order Manager System