> For the complete documentation index, see [llms.txt](https://ksdaemon.gitbook.io/wampy.js/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ksdaemon.gitbook.io/wampy.js/api/unregister.md).

# unregister()

### unregister(topicURI)

RPC unregistration from invocations.

Parameters:

* **topicURI**. Required. A string that identifies the remote procedure to be unregistered. Must meet a WAMP Spec URI requirements.

Returns `promise`:

* Resolved with one hash-table parameter with following attributes:
  * **topic**
  * **requestId**
* Rejected with one of the [Errors instances](broken://pages/e80SGqRyzZXRlbWTYu1Y)

```javascript
await ws.unregister('sqrt.value');

try {
    ws.unregister('sqrt.value');
    console.log('RPC successfully unregistered');
} catch (e) {
    console.log('RPC unregistration failed!', e);
}
```

###