# Error: messaging_unavailable

> Sending is briefly unavailable

Source: https://docs.vlayers.ai/errors/messaging_unavailable

- HTTP status: 503
- Retry: Yes, after a short wait

## What happened

Sending is briefly unavailable.

## Why

Sending (or conversation control) could not run: a dependency is down, whether the message may be sent could not be checked, or messaging is not set up on this deployment.

## How to fix it

Retry shortly, with the same Idempotency-Key.

## Example response

```json
{
  "error": "messaging_unavailable",
  "message": "Sending is briefly unavailable.",
  "requestId": "req-8f2c1d4b",
  "retryable": true,
  "docs": "https://docs.vlayers.ai/errors/messaging_unavailable"
}
```