Can I get help in understanding the SmartSheet refresh token lifecycle ?

Can I get help in understanding the SmartSheet refresh token lifecycle ? I recently created a new managed Oauth App and noted down its clientId and secret. Using these 2, I generated an auth code and then generated access token and refresh token. From other forum post, got to know that refresh token doesn't have expiry. However, I get access denied error on API access and on refreshing the access token, getting below error:

{ "errorCode": 1071, "message": "Invalid Grant. The authorization code or refresh token provided was invalid.", "error": "invalid_grant", "refId": "aonvq0"}

Note - Managed app was created just 10-12 hours before this issue occurred.

What could be causing this issue?

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prime_nathaniel

@nishikamanira nothing you stated sounded wrong, it is a standard Oauth implementation. Are you submitting in correct content type?

nishikamanira

@prime_nathaniel Thanks for checking. I am using the correct content type. Below is the curl request. Issue is that in about 10-12 hours, when there is need to get new access token if I try to get it with below request, I am getting this error response:

curl --location 'https://api.smartsheet.com/2.0/token' --header 'Content-Type: application/x-www-form-urlencoded' --data-urlencode 'grant_type=refresh_token' --data-urlencode 'refresh_token=zo1i5livlf0a632duodxz28zfc' --data-urlencode 'client_id=xxxxxudyjaxxx2' --data-urlencode 'client_secret=xxxxxxmsaboxxxwu'

Error response:

{
"errorCode": 1071,
"message": "Invalid Grant. The authorization code or refresh token provided was invalid.",
"error": "invalid_grant",
"refId": "rxct37"
}

This probably shows that the refresh token has expired. But as per earlier threads of this forum, I read that refresh token doesn't expire. Why is the refresh token expiring in my case and that too in only about 10-12 hours?

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