# Unknown error slug

`https://epcis.dev/errors/unknown-error-slug`

| | |
|---|---|
| status | 404 |
| retryable | false |
| costed | false |
| served by | epcis.dev · barcoding.dev · transactions.dev · worklists.dev · visibility.cloud · visibility.associates · id.org.ai |

This door's error registry holds no entry under that slug. The registry answers for what it holds and refuses the rest — an error document is never synthesized for an unrecognized slug.

## What to do

Enumerate the door's registry at /errors/ and use a slug it lists.

## Derived from

- docs/specs/shared-surface.md §4.2
- #249