Affects
Teams that retrieve SPB message logs or signed message artifacts.
What changed
Message-log reads return structured data. A retained signed on-wire frame is available only from its dedicated, separately authorized route. The service does not retain literal sent bytes as a separate artifact. This is a correction to the documented current behavior; it does not announce a runtime release.
Impact
Classification: Review recommended.
What you need to do
Review integrations and operational procedures that need signed frames so they use the dedicated authorized route rather than a message-log response.