Your merchant token is a unique seller identifier used in Amazon Merchant Transport Utility (AMTU), third-party applications and XML feeds to match up products that you upload with your seller account.
Note: You cannot share a merchant token with other sellers or use it for different seller accounts. It is unique to a given seller.
View your merchant token
To view your merchant token, complete the following steps:
From your seller account, go to the Settings menu and select Account Info.
In the Business Information section, select Merchant Token. The token is displayed on the page.
Note: The View your merchant token steps mentioned above is only available for Selling Partners enrolled in the Professional Selling Plan.