> ## Documentation Index
> Fetch the complete documentation index at: https://docs.get-exo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Domain not found

> No such graph domain exists for the effective subject.

This page is the resolution target of the RFC 9457 `type` URI on every `domain_not_found` problem body: `https://docs.get-exo.com/errors/domain_not_found`.

**HTTP status: `404` Not Found**.

```json theme={"theme":{"light":"github-light-default","dark":"github-dark-default"}}
{
  "type": "https://docs.get-exo.com/errors/domain_not_found",
  "title": "Domain not found",
  "status": 404,
  "detail": "No such graph object for this caller.",
  "code": "domain_not_found",
  "requestId": "req_9f2c41ab7d0e5c18"
}
```

## Why it happens

Domains are discovered by community detection over the subject's own graph, so the set differs per subject and changes as the graph grows.

A domain id from one subject means nothing under another.

## How to fix it

* List domains with `GET /v1/graph/domains` under the same effective subject and use an id from there.
* A freshly ingested graph may have no domains yet. Domain detection runs in the background cycle.

## Related

* [`node_not_found`](/errors/node_not_found)
* [`not_found`](/errors/not_found)
* [Errors](/platform/errors) for the envelope and the full catalogue