---
url: >-
  https://adk.nht.io/api/@nhtio/adk/batteries/variables/E_INVALID_ISOLATION_OPTIONS.md
description: >-
  Thrown when an isolation battery options bag (spec input, host options, codec
  options, crash-policy options) fails eager validation — e.g. an unknown
  top-level key, or a duplicate name across a spec's
  `methods`/`streams`/`events`. Fatal: config bugs fail loud, not at first use.
---

# Variable: E\_INVALID\_ISOLATION\_OPTIONS

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

Defined in: [src/batteries/isolation/exceptions.ts:93](https://github.com/NHTIO/ADK/blob/v1.20260713.1/src/src/batteries/isolation/exceptions.ts#L93)

Thrown when an isolation battery options bag (spec input, host options, codec options, crash-policy
options) fails eager validation — e.g. an unknown top-level key, or a duplicate name across a spec's
`methods`/`streams`/`events`. Fatal: config bugs fail loud, not at first use.