# oAuth and create Meeting (error 400)

**URL:** <https://devforum.zoom.us/t/oauth-and-create-meeting-error-400/8647>\
**Category:** API and Webhooks\
**Created:** [March 14, 2020, 12:40am UTC](https://devforum.zoom.us/t/oauth-and-create-meeting-error-400/8647 "2020-03-14T00:40:30Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![efysegal](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/efysegal/32/10930_2.png) [@efysegal](https://devforum.zoom.us/u/efysegal)\
**Post date:** [June 29, 2020, 3:30pm UTC](https://devforum.zoom.us/t/oauth-and-create-meeting-error-400/8647/7 "2020-06-29T15:30:19Z")

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OK Tommy,

I managed to solve the problem.  
In your documentation:  
" HEADERS: `{"Authorization": "Basic {BASE64ENCODED_CLIENT_ID}:{BASE64ENCODED_CLIENT_SECRET}"}`"  
You mislead us a bit as the true answer is:  
" HEADERS: `{"Authorization": "Basic BASE64ENCODED(CLIENT_ID:CLIENT_SECRET)"}`"

Please fix it in - [Error in Refreshing with refresh tokens](https://devforum.zoom.us/t/error-in-refreshing-with-refresh-tokens/5163/5)

BR,  
Efy

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