We are currently observing an internal issue impacting the Royal Mail carrier integration. As a result, Narvar returns submitted through Royal Mail are encountering errors at the time of submission.
Our engineering team has already been engaged and is actively working on resolving the issue. Please note that this incident is limited only to Royal Mail returns and does not affect other carriers.
We will continue to monitor the situation closely and provide further updates as soon as we have more information.
Thank you for your patience and understanding.