---
url: >-
  https://adk.nht.io/api/@nhtio/adk/batteries/dev-tools/variables/E_DEV_ENGINE_REQUIRED.md
description: A requested engine capability is not configured.
---

# Variable: E\_DEV\_ENGINE\_REQUIRED

```ts
const E_DEV_ENGINE_REQUIRED: CreatedException<[string]>;
```

Defined in: [src/batteries/dev\_tools/exceptions.ts:28](https://github.com/NHTIO/ADK/blob/master/src/src/batteries/dev_tools/exceptions.ts#L28)

A requested engine capability is not configured.