---
url: >-
  https://adk.nht.io/api/@nhtio/adk/exceptions/variables/E_ARTIFACT_ID_COLLISION.md
description: >-
  Thrown when a tool call and retrievable eligible for artifact forging share an
  id.
---

# Variable: E\_ARTIFACT\_ID\_COLLISION

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

Defined in: [src/lib/exceptions/runtime.ts:155](https://github.com/NHTIO/ADK/blob/v1.20260826.0/src/src/lib/exceptions/runtime.ts#L155)

Thrown when a tool call and retrievable eligible for artifact forging share an id.