Error recived report AdWordsAPI

[Владимир Шангеев]

Hello, when I try to send request I got a error:

Account: 725-468-XXXX

error recived report:  Google.Api.Ads.Common.Lib.AdsOAuthException: Failed to refresh access token.

{

  "error" : "invalid_grant"

}

For Update refresh_tokien I have used "https://developers.google.com/oauthplayground"

I've generate new refresh_tokien, but my problem keep.

What I have to do? 

Thanks

[Yin Niu]

Hi, 

When you generate client id/secret, did you select installed application type? When you use OAuth playground, you should check "Use your own OAuth credentials". 

Thanks,

Yin, AdWords API Team.