Refresh token using oauth with calendly api encounters failure

Hello!

I have replied to your inquiry in the help desk ticket you submitted. Thank you for reaching out to our support! 

Can you please post the solution here as well?

Can you please post the solution here as well?

​@Tessa0991 Encountering same error, could you please share the solution here?

​@Vansh75850 - are you able to share an example of the request you are sending (with credentials redacted)?

This error typically occurs due to the authorization header being incorrectly set. Although it is not specified in the documentation, you can send a json request (instead of URL form encoded format) as seen in Calendly’s example code:

https://github.com/calendly/buzzwordcrm/blob/main/services/calendlyService.js#L187

Hey ​@Calforce50652 ,
this is how i am sending the request

const tokenUrl = 'https://auth.calendly.com/oauth/token';

      const response = await axios.post(tokenUrl, {

        grant_type: 'refresh_token',

        client_id: this.clientId,

        client_secret: this.clientSecret,

        refresh_token: this.calendlyRefreshToken,

            });

When token gets expired 2-3 times and after refresh it throws invalid_grant error.
{
  "error": "invalid_grant",
  "error_description": "The provided authorization grant is invalid, expired, revoked, does not match the redirection URI used in the authorization request, or was issued to another client."
}

I’ve tried sending the request with headers, but I’m still getting the same error.

​@Vansh75850 - the axios request looks correct, so this means that either the newly returned refresh token isn’t being saved or that there is some type of race condition where you are sending the refresh request in parallel using the same refresh token.

Are you able to share more of your code, or upload a portion of the code having the issue to GitHub? As I mentioned, the request looks fine so it’s likely something else that i causing the issue.