Accepting Merchant Credentials (Manual Configuration)
Upon completion of the simplified registration workflow, if you have not provided the return URL (in which case the page displays a “Continue to Seller Central” link to the merchant), or if the merchant clicks the Seller Central link provided on the registration page, the merchant will be sent to Seller Central. This serves the dual purpose of letting merchants know that they need to complete some post- registration activities and showing them their credentials. Among the credentials shown, the following fields are needed for you to make API calls on behalf of the merchant:
- merchant_id – This is the Amazon ID associated with the merchant.
- client_id – This is the public key needed to render the Login with Amazon button.
- MWSAuthToken – This is a unique shared secret token that is passed via an additional
parameter in API calls to increase security.
Note: The MWSAuthToken must be encrypted before storing it on disk.
In this circumstance, the merchant must be allowed to enter these 3 values by way of input form fields in the Ecommerce provider backend.
Note: See the Amazon Pay help pages for information on finding your merchant credentials (US link; UK link; DE link).