# PROMOTE_COLLECTION_NOT_FOUND

`db:sync --promote` names a collection the Schema Builder has no record of.

## Cause

`db:sync --promote` names a collection the Schema Builder has no record of.

`nextly db:sync --promote <slug>` moves a collection built in the Schema Builder into `nextly.config.ts`. No collection the Schema Builder created has this slug.

## Fix

* Check the slug in the admin's Schema Builder.
* A collection already defined in `nextly.config.ts` is in code and needs no promotion.

## Example

```text
✗ Collection 'posts' not found in UI source (dynamic_collections).
  Why:  `--promote` moves a collection built in the Schema Builder into code, and no collection with this slug was built there.
  Next: Check the slug in the admin's Schema Builder. A collection already defined in `nextly.config.ts` is in code and needs no promotion.
  Docs: https://nextlyhq.com/docs/cli/errors/promote-collection-not-found  (PROMOTE_COLLECTION_NOT_FOUND)
```