400 Bad Request invalid_grant

[Amol Kawale]

Hello Team,

We try to execute get keyword suggestion API & locations API in google ads but we getting the following issues:

Fatal error: Uncaught GuzzleHttp\Exception\ClientException: Client error: `POST https://oauth2.googleapis.com/token` resulted in a `400 Bad Request` response: { "error": "invalid_grant", "error_description": "Token has been expired or revoked." } 

I tried to generate refresh token as well but it giving me error as follows:

https://prnt.sc/Um0nYXn2gG_j

Pls help to fix me.

Regards,

Amol

[Google Ads API Forum Advisor]

Hi Amol,

The invalid_grant error is likely caused by the refresh token issue you are having. Can you please tell us what steps you are taking to generate a refresh token? For example, if you are using a client library, you can generate a refresh token by running the GenerateUserCredentials example. 

If you continue seeing the error in the screenshot, please click 'error details' and provide us with those details.

Thanks,

Matt Google Ads API Team

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