Invalid grant - cannot access api

[LKRPL]

Hi,

we have the following error: 

Exception in thread "main" com.google.api.ads.common.lib.exception.OAuthException: Credential could not be refreshed.

at com.google.api.ads.common.lib.auth.OfflineCredentials.generateCredential(OfflineCredentials.java:178)

at it.reply.fcadda.ForecastGenerator.GetCampaigns.main(GetCampaigns.java:46)

Caused by: com.google.api.client.auth.oauth2.TokenResponseException: 400 Bad Request

{

  "error" : "invalid_grant"

}

at com.google.api.client.auth.oauth2.TokenResponseException.from(TokenResponseException.java:105)

at com.google.api.client.auth.oauth2.TokenRequest.executeUnparsed(TokenRequest.java:287)

at com.google.api.client.auth.oauth2.TokenRequest.execute(TokenRequest.java:307)

at com.google.api.client.auth.oauth2.Credential.executeRefreshToken(Credential.java:570)

at com.google.api.client.googleapis.auth.oauth2.GoogleCredential.executeRefreshToken(GoogleCredential.java:362)

at com.google.api.client.auth.oauth2.Credential.refreshToken(Credential.java:489)

at com.google.api.ads.common.lib.auth.OAuth2Helper.callRefreshToken(OAuth2Helper.java:69)

at com.google.api.ads.common.lib.auth.OfflineCredentials.generateCredential(OfflineCredentials.java:172)

-The code here: "https://developers.google.com/adwords/api/docs/samples/java/optimization#estimate-keyword-traffic"

-Ads.properties details: 

a) clientId and clientSecret (associated to this account) 

b) clientCustomerId: account created by a test account

c) developerToken (associated to this account)

d) refreshToken (obtained following this:"https://github.com/googleads/googleads-java-lib/wiki/API-access-using-own-credentials-(installed-application-flow)#step-2---setting-up-the-client-library" through the test account).

Can you help us? Thanks.

[Peter Oliquino]

Hi,

The "invalid_grant" error usually indicates that the access or refresh token being passed in your request is incorrect or invalid. Before proceeding further, could you first confirm if you are indeed using a test account to estimate keyword traffic? If yes, could you also confirm if you created the OAuth2 credentials while logged in to the email address associated to your test MCC account? If not, please do so and generate a new refresh token then retry your request. Let me know if the issue persists.

Thanks and regards,

Peter

AdWords API Team