---
title: 2003: Attachment not found | API Docs
description: The requested attachment does not exist or is no longer available.
---

The requested attachment does not exist or is no longer available. This is an HTTP 404 error indicating the attachment ID you provided could not be resolved.

## Troubleshooting

- Verify the attachment ID is correct and was created under your partner account — an attachment belonging to another account also returns this error
- Attachments on the ephemeral tier are removed on a storage backstop within roughly 24–48 hours of upload, after which their IDs no longer resolve
- Presigned upload and download URLs expire, so ensure uploads complete before the URL expires

## Related

- [Attachments](/channel/imessage/guides/messaging/attachments/index.md)
- [API reference: Attachments](/channel/imessage/api/resources/attachments/index.md)
- [Debugging](/channel/imessage/guides/platform/debugging/index.md)