"Invalid request : Client ID mismatch" OAuth

https://zoom.us/oauth/token?grant_type=authorization_code&code={my code}&redirect_uri={my callback URL}

Making a POST Request to the above URL shows
“reason”: “Invalid request : Client ID mismatch”,
“error”: “invalid_client”
I’m not quite sure what the issue is. I am usinf development credentials and had copy pasted the correct client ID and client_secret followed this url:

But i am unable to get accesstoken.
Which App Type (OAuth / Chatbot / JWT / Webhook)?

Screenshots (If applicable)

Hey @lachu2598

Thanks for posting on the Zoom Devforum! I am still learning, but I will try my best to help answer your question. :slightly_smiling_face:

Checkout these related threads that may have the answer you are looking for:

If these threads did not help, please let us know by replying back here and someone from the Developer Relations team will get back to you shortly.


Hey @lachu2598,

Are you still having trouble with this? If so, can you ensure you’re following the instructions in step 2 here:

It looks like you’re trying to use Basic Auth in your Postman screenshot, but you will need to pass an Authorization header like so:

Let me know if you still have issues and I’m happy to help!


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