# Operation Locked: Rate Limit (50ms)

**URL:** <https://devforum.zoom.us/t/operation-locked-rate-limit-50ms/74055>\
**Category:** Video SDK\
**Created:** [August 11, 2022, 11:58am UTC](https://devforum.zoom.us/t/operation-locked-rate-limit-50ms/74055 "2022-08-11T11:58:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![neiloswald](https://avatars.discourse-cdn.com/v4/letter/n/919ad9/32.png) [@neiloswald](https://devforum.zoom.us/u/neiloswald)\
**Post date:** [August 11, 2022, 11:58am UTC](https://devforum.zoom.us/t/operation-locked-rate-limit-50ms/74055/1 "2022-08-11T11:58:09Z")

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Hi @vic.yang

I am encountering this intermittent error while initiating Zoom Sessions:

```auto
index.umd.js?a087:1 Uncaught (in promise) {type: 'OPERATION_LOCKED', 
reason: 'Cannot complete the operation due to the rate limit(50ms)'}

```

as a result session participants cannot be connected.

Any hint is appreciated.

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<div class="post-metadata">

**Author:** ![vic.yang](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/vic.yang/32/24656_2.png) [@vic.yang](https://devforum.zoom.us/u/vic.yang)\
**Post date:** [August 12, 2022, 3:13am UTC](https://devforum.zoom.us/t/operation-locked-rate-limit-50ms/74055/2 "2022-08-12T03:13:03Z")

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Hey @neiloswald

Thanks for your feedback.

Did you call the `cmdChannel.send([text])` method? The Video SDK Web has a rate limit of 50ms per call in the previous version, in the latest version(1.4.0), we removed this limit.

Thanks  
Vic

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<div class="post-metadata">

**Author:** ![neiloswald](https://avatars.discourse-cdn.com/v4/letter/n/919ad9/32.png) [@neiloswald](https://devforum.zoom.us/u/neiloswald)\
**Post date:** [August 15, 2022, 2:40am UTC](https://devforum.zoom.us/t/operation-locked-rate-limit-50ms/74055/3 "2022-08-15T02:40:37Z")

</div>

> [@vic.yang](#):
>
> 50ms per

@vic.yang

Yes, I called cmdChannel.zend(\<command\_text\>).

I confirmed that v1.4.0 fixed this issue.

Thank you very much.