---
title: "MGS9029: review host failed"
description: A publish or reply the code-review host refused or could not receive, so nothing reached the reviewer. Answered 502.
tags: [MGS9029, api, review, publish, "502"]
---

# MGS9029: review host failed

The server answered `502 bad gateway` because the review host did not take a
publish or a reply. Nothing was sent.

```text
[MGS9029] publish: no pull request is open for this branch
  see: .../MGS9029.md
```

## Why

Publish and reply put sentences in front of colleagues, so they fail loudly: a
reader told a send succeeded when it did not will never find out. The message
carries the host's own reason after the op name (no open review, no credential,
an HTTP status from the host).

## Resolution

Act on the reason it names, then send again. The drafts stay in the session
until they are published.

## What this is not

- **Not an incomplete request.** A reply with no thread or no text is
  [MGS9023](MGS9023.md), answered `400` because the fix is on the caller's side.
- **Not a review lookup.** Reading the open review never fails; an unreachable
  host is a closed target with a reason.