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

# media.unknown

> A mediaId on the request body doesn't resolve to a media record we can see.

## What it checks

The `mediaId` referenced from `media: [{ mediaId: "med_..." }]` doesn't match a media row in your organization's profile scope.

Causes:

* Typo in the id.
* The media row was deleted.
* A profile-scoped key referencing media uploaded under a different profile.
* The `med_…` id format is correct (`/^med_[0-9A-Za-z]{22}$/`) but no row matches.

## Remediation

Re-upload via [`POST /v1/media`](/guides/upload-media) and use the new id, or verify the id exists with `GET /v1/media`.