What it is

A message where the system started sending but could not establish what happened — usually because the connection dropped part-way.

Why use it

You need to understand this one, because handling it wrongly sends somebody the same message twice.

Example

A text was handed to the provider, then the connection failed before a confirmation came back. It may have gone. It may not.

Steps

1. Open the sequence list and read Scheduler health.
2. Check with your email or SMS provider whether the message actually went.
3. Only then decide whether to send again.

What happens next

These are shown separately from failed sends on purpose. A failure can safely be retried. An unknown outcome cannot — the system will not retry one automatically, and neither should you without checking.

Common problems

Can I just retry them all?

No. Some may already have been delivered, and retrying sends them twice.