The Amazon MWS Authorisation token that grants developer access to seller data will be subject to annual review and renewal by sellers.
What this means is your link to RepricerExpress will need to be re-applied each year. You will receive a notification from Amazon one month before the authorisation expires. If no action is taken the token will be deactivated on the expiration date.
When an authorisation token expires, it is simply deactivated but not invalidated. You can always renew an expired authorisation token.
Once renewed the expiration date resets to one year from the date of renewal.
We will also send you an email notification as well. Around this time you will see a notification on your RepricerExpress dashboard:
If you click on the review now button, you will be taken to your Channels screen where you will see the channels will be un-linked and showing as 'Relink Required':