# campaign_not_resumable

- HTTP status: 409
- Retry: No
- Execution: not started
- Admin needed: no

**Campaign cannot be resumed.** The paused run can no longer continue (for example it ended while paused, or it began before a change to how the workspace places calls). Starting the campaign again begins a new run that calls every recipient of the previous run again, including people already reached, and charges for those calls.

## What it means

The API returns HTTP 409 with `error.code` set to `campaign_not_resumable`. The default message is: "This campaign cannot be resumed. Start it again to begin a new run."

## Common causes

- The paused run finished or was cancelled.
- The workspace calling configuration changed since the run began.

## How to identify it

Check the response status (`409`) and `error.code` (`campaign_not_resumable`). Branch on `error.code`, not on the message text: messages can be reworded, codes do not change within v1. Log `error.request_id` (also sent as the `X-Request-Id` header) so support can find the request.

## How to fix it

- To call only the people not reached yet, list the recipients whose status is still `pending`, create a new campaign with those contacts, and start it.
- Or use POST /v1/campaigns/{campaign_id}/start to begin a new run over every recipient again.

## Retry guidance

Sending the request unchanged fails the same way. Fix the cause first (see How to fix it), then send it again.

## Did anything happen?

This request was refused before any call was placed and before anything was charged.

## Idempotency

Nothing was done and the refusal is not stored under the Idempotency-Key. Fix the cause, then send the same request (with the same key if you sent one).

## Who can fix it

The developer who sends the request can fix it; no administrator action is normally needed.

## When to contact support

If a start is also refused, write to [support@relationsai.com](mailto:support@relationsai.com). See [Support](/resources/support) for what to include (the `request_id`, the time in UTC, the operation, and whether you used a test or live key) and what never to send (API keys, Authorization headers, webhook signing secrets, recording links, transcripts or customer data).

## Example error response

```json
{
  "error": {
    "code": "campaign_not_resumable",
    "message": "This campaign cannot be resumed. Start it again to begin a new run.",
    "details": {},
    "request_id": "req_fqpqnooutievlvaarbyqcg2m",
    "retry": "no",
    "doc_url": "https://docs.relationsai.com/errors/campaign_not_resumable"
  }
}
```

## Operations that can return this error

- [`POST /campaigns/{campaign_id}/resume`](/api/campaigns#resume-a-campaign): Resume a campaign

See all codes in the [error-code reference](/fundamentals/error-codes).