Amazon application permissions can expire or be disabled manually. You can quickly check your Amazon Seller Central account to check for the status of the authorization:

Before the authorization expires, Amazon will notify the account owner via email, and there will be a notice in their interface:
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There are a few possibilities as to why authorization credentials expire. The first reason is that the permissions were removed from the Amazon user interface. In the Amazon interface, Openbridge permissions were disabled:

Another possibility is that the authorization expired due to Amazon's system action. Once you authorize Openbridge to access your Seller account, the granted access remains valid for 12 months from the issuance date. In the screenshot above, you can also see the valid authorization period, re-authorization, and disable authorization.

To ensure uninterrupted data collection, it is essential to renew Openbridge access before the expiration of the initial authorization. Doing so allows you to extend our access for an additional 12 months starting from the renewal date.

Amazon will email the seller directly that a token is set to expire 30 days before the expiration date. Per Amazon;

If you do not renew Openbridge access before the access expiration date, our access will be terminated by Amazon. This will put our app in an "expired" state. As such, all data collection we undertake on your behalf will stop!

If the access is expired or revoked, our app will be "disabled" upstream at Amazon. Once it expires, Amazon removes the original SP-API or MWS Auth token authorization. Openbridge will not be able to access your account. To grant Openbridge access again, you must "enable" access.

In your Seller Central account, go to Settings->Third party developer and apps-> Manage your Apps. Find Openbridge and enable access. When granting access to Openbridge, Amazon will create a new authorization.

Next, you must log into your Openbridge account and update the remote identity authorization with the new token from Amazon. This informs us that a change was made to the authorization.

Also, in the event of expired Selling Partner authorizations, Openbridge may have paused your subscriptions. Why? Amazon was rejecting our API requests. You must log in to your Openbridge account and reactivate any paused subscriptions. Only do this after you update the Auth token.

Renewal is the simplest path. Renewing authorizations will preserve Openbridge access, and data collection will continue uninterrupted.

In your Seller Central account, go to Settings->Third party developer and apps-> Manage your Apps. Find Openbridge and renew access by checking if the "Rewal" button is present for Openbridge. If so, click "Renewal." That is it!
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The original Openbridge Auth token will remain intact if you renew before expiration. Unlike expired authorizations, renewals mean you will not have to give us a new Auth token!

When access is lost, we can not collect data for you. Unfortunately, loss of access will lead to gaps in data that can not be backfilled. There are two steps you can take to avoid expired authorization: