OAuth | FAQs & Troubleshooting - Zoho Accounts

Why am I receiving invalid_client or invalid_client_secret error message?

If you're facing the above errors the following might be the reason behind it:

A new line character or extra space between the parameters. 

For example, the following request has a new character line after "client_id":

https://accounts.zoho.com/oauth/v2/token?client_id=1000.70FT7TMXXMGU93289P1QKUXQYLOD3H&client_secret=8baddfde46a07747 e26939fba63d91206f391bd391&redirect_uri=http://inocrea.be/callback&grant_type=authorization_code&code=1000.186a618465cbab1e6cf0bbdacabf56e5.5da7a8d7586961d5fb5149a3e4c1c5c4

Accessing the client details from another DC

To access information of the users from different regions we have provision called Multi-DC. To use the client ID created in another DC, you need to enable Multi-DC support for that client ID from your API Console.
Once enabled you will be able to make /oauth/v2/token calls to DC's like US, EU, or IN to which the respective user belongs to. You can learn more about multi-DC accounts in our help guide.

For detailed information, please refer to our OAuth documentation

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