# NEXTLY_SCHEMA_EXTEND_TARGET_UNKNOWN

A plugin extends an entity that neither the configuration, a plugin nor the Schema Builder declares.

## Cause

A plugin extends an entity that neither the configuration, a plugin nor the Schema Builder declares.

A plugin's `contributes.extend` adds fields to an existing entity. The target it names is not a collection, single or field group in `nextly.config.ts`, in any plugin, or in the Schema Builder, which usually means a typo.

## Fix

* Correct the target slug in the plugin's `contributes.extend`.
* Or create the entity it names, in `nextly.config.ts` or the Schema Builder.

## Example

```text
✗ Plugin "reviews" extends unknown entity "prodcuts".
  Why:  "prodcuts" is not a code-first or plugin collection, single or field group in the merged schema, and the Schema Builder has none by that slug.
  Next: Correct the target "prodcuts" in the plugin's `contributes.extend`, or create the entity it names.
  Docs: https://nextlyhq.com/docs/cli/errors/nextly-schema-extend-target-unknown  (NEXTLY_SCHEMA_EXTEND_TARGET_UNKNOWN)
```