This incident has been resolved.

The USPS rating service appears to still be experiencing some issues. We've reached out to their technical support to provide an ETA on a solution.

USPS rating services appear to be stable at the moment. We will continue to monitor for any outages.

We are currently investigating an intermittent issue with USPS rating returning a system error message from the carrier.

If you are using USPS as your primary rates provider, please add a secondary carrier to ensure your customers can continue to purchase products from your site.