Hi Pravin,
Since your refresh token is becoming invalid after 3600 seconds = 1 hour,
that suggests that you are *not* setting *access_type* to *offline* in your
request to generate the refresh token. Please double check the step that
generates
the initial request
<https://developers.google.com/identity/protocols/OAuth2WebServer#offline>
and make sure that you pass *access_type=offline* there.
Thanks,
Josh, AdWords API Team
On Wednesday, April 13, 2016 at 12:44:57 AM UTC-4, Pravin Yadav wrote:
>
>
>
> Hi Josh,
>>
>
> Ok, But in my application if i generate refresh token
> manually using "Google AdWords API Project OAuthTokenGenerator" and then
> stored it in my database and later access it in web service for 3600 (Sec)
> time it working properly not showing any error but after
> 3600(Sec) it showing error.
>
> *Failed to refresh access token.*
> * {*
> * "error" : "invalid_grant"*
> * }*
>
> Then what will be the problem even access token generated
> each time new and i have refresh token then here no need to show error. But
> refresh token is expired after 3600(Sec) and it not generated
> automatically, but when create refresh token manually then
> working properly for 3600(Sec).
>
> Then what should i need to do give me any solution.
>
>
>
>
>> Thanks & Regards,
>>
>> Pravin Yadav
>>
>>
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