Log in to seller central
Log in to the seller central account that has admin privileges. https://sellercentral.amazon.com
Locate MWS Credentials
Go to https://developer.amazonservices.com/ and click on the "Sign up for MWS" button.
If your seller central account has the correct privileges then you will be present with a few options.
Choose "I want to access my own Amazon seller account with MWS." Click Next.
Accept the license agreement and click Next.
You should now see your credentials. Save these and take a screenshot.
Provide us with your Credentials for the Connector
Send all the credentials to the Apps Team through our support ticketing system.