# Error "invalid client" using postman to generate access token in zoom(oauth)

**URL:** <https://devforum.zoom.us/t/error-invalid-client-using-postman-to-generate-access-token-in-zoom-oauth/73217>\
**Category:** Zoom Apps\
**Created:** [July 29, 2022, 6:39am UTC](https://devforum.zoom.us/t/error-invalid-client-using-postman-to-generate-access-token-in-zoom-oauth/73217 "2022-07-29T06:39:26Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![sureshv2508](https://avatars.discourse-cdn.com/v4/letter/s/bbe5ce/32.png) [@sureshv2508](https://devforum.zoom.us/u/sureshv2508)\
**Post date:** [July 29, 2022, 6:39am UTC](https://devforum.zoom.us/t/error-invalid-client-using-postman-to-generate-access-token-in-zoom-oauth/73217/1 "2022-07-29T06:39:26Z")

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hello guys i am using post man to generate access token for zoom i done every thing. when i click get new access token button in post man it redirect to browser it displays **"Your call is authenticated**

**A new window should open directing you back to the Postman app. If nothing happens, check to make sure your browser allows pop-ups."**

when i goto postman it display like this in console  
**- POST https: [//zoom.us/oauth/token](https://zoom.us/oauth/token)**  
**© “Error: invalid\_client”**

it display error like this how to handle this error

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**Author:** ![gianni.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/gianni.zoom/32/32523_2.png) [@gianni.zoom](https://devforum.zoom.us/u/gianni.zoom)\
**Post date:** [August 3, 2022, 3:27am UTC](https://devforum.zoom.us/t/error-invalid-client-using-postman-to-generate-access-token-in-zoom-oauth/73217/2 "2022-08-03T03:27:52Z")

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Hi @sureshv2508 ,

Can you please clarify whether you’re developing a [Zoom App](https://marketplace.zoom.us/docs/zoom-apps/getstarted) or an [OAuth app](https://marketplace.zoom.us/docs/guides/build/oauth-app) type?

For Zoom Apps, the access token request flow differs from our standard OAuth app type. This process is highlighted here: [Zoom Developer Docs](https://marketplace.zoom.us/docs/zoom-apps/guides/authentication#2-use-the-authorize-method-and-onauthorized-event-in-your-app)

Best,  
Gianni

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**Author:** ![Anchovy](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/anchovy/32/40254_2.png) [@Anchovy](https://devforum.zoom.us/u/Anchovy)\
**Post date:** [August 8, 2022, 12:19am UTC](https://devforum.zoom.us/t/error-invalid-client-using-postman-to-generate-access-token-in-zoom-oauth/73217/3 "2022-08-08T00:19:36Z")

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Hi @gianni.zoom - I’m getting the same error:

```auto
{
  "reason": "Invalid client_id or client_secret",
  "error": "invalid_client"
}

```

We’ve just created a Server to Server OAuth app as per [Create a Server-to-Server OAuth App](https://marketplace.zoom.us/docs/guides/build/server-to-server-oauth-app/#use-account-credentials-to-get-an-access-token) but we’re stuck at step generating the access token.

We’re using endpoint: `https://zoom.us/oauth/token?grant_type=account_credentials&account_id={account_id}`

I think the issue might be the **account\_id** - where do we find this?

Thanks in advance.

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**Author:** ![geet](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/geet/32/40016_2.png) [@geet](https://devforum.zoom.us/u/geet)\
**Post date:** [August 8, 2022, 7:05am UTC](https://devforum.zoom.us/t/error-invalid-client-using-postman-to-generate-access-token-in-zoom-oauth/73217/4 "2022-08-08T07:05:49Z")

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Hi, can you help me with this query [How to disable invite link in zoom meeting SDK](https://devforum.zoom.us/t/zoom-meeting-sdk-how-to-disable-invite-link/73763)

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<div class="post-metadata">

**Author:** ![gianni.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/gianni.zoom/32/32523_2.png) [@gianni.zoom](https://devforum.zoom.us/u/gianni.zoom)\
**Post date:** [August 8, 2022, 3:40pm UTC](https://devforum.zoom.us/t/error-invalid-client-using-postman-to-generate-access-token-in-zoom-oauth/73217/5 "2022-08-08T15:40:42Z")

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@geet , I responded to you here: [Zoom Meeting SDK : How to disable invite link - #5 by gianni.zoom](https://devforum.zoom.us/t/zoom-meeting-sdk-how-to-disable-invite-link/73763/5)

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**Author:** ![gianni.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/gianni.zoom/32/32523_2.png) [@gianni.zoom](https://devforum.zoom.us/u/gianni.zoom)\
**Post date:** [August 8, 2022, 3:42pm UTC](https://devforum.zoom.us/t/error-invalid-client-using-postman-to-generate-access-token-in-zoom-oauth/73217/6 "2022-08-08T15:42:49Z")

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Hi @Anchovy , for server-to-server, get the account id via [https://api.zoom.us/v2](https://api.zoom.us/v2)  
/users/{userId} endpoint and the account id will be returned in the response body.

Thanks,  
Gianni