404 Error on Ad-hoc Send Retry Resolved

Customers experienced a 404 error when using the Send Again feature on undeliverable notifications for ad-hoc sends that included a fan-out (lists, tenants, array of profiles, audiences). The Send Again feature would work for the full original message but would fan out and re-send to all recipients. The endpoint was rewritten to address this problem and now successfully supports re-queuing ad-hoc list messages.

Learn more: Learn more about sending with tenants · See how to send to a list or list pattern