Not able to re-use refresh tokens while migrating

[Nenad Pantic]

Hi, 

I understood that I can still use stored refresh tokens when migrating from Google Adwords to Google Ads as per https://developers.google.com/google-ads/api/docs/migration/carryover : 

"The requirements for authentication remain the same. The Google Ads API uses OAuth2 for authentication, which requires an access token at the time of the request. You can re-use your existing refresh token, client id, and client secret that were used for the AdWords API without any adjustments."

But we are seeing exceptions like this: 

MethodName: google.ads.googleads.v6.services.CustomerService/ListAccessibleCustomers

Endpoint: googleads.googleapis.com:443

Headers: {developer-token=REDACTED, x-goog-api-client=gl-java/11.0.11 gapic/ gax/1.60.1 grpc/1.34.1}

Body:

Response

--------

Headers: null

Body: null

Failure message: null

Status: Status{code=UNAVAILABLE, description=Credentials failed to obtain metadata, cause=com.google.api.client.http.HttpResponseException: 400 Bad Request

POST https://oauth2.googleapis.com/token

{

  "error": "invalid_grant",

  "error_description": "Bad Request"

}

        at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1113)

        at com.google.auth.oauth2.UserCredentials.refreshAccessToken(UserCredentials.java:203)

        at com.google.auth.oauth2.OAuth2Credentials.refresh(OAuth2Credentials.java:157)

        at com.google.auth.oauth2.OAuth2Credentials.getRequestMetadata(OAuth2Credentials.java:145)

        at com.google.auth.oauth2.UserCredentials.getRequestMetadata(UserCredentials.java:281)

        at com.google.auth.Credentials.blockingGetToCallback(Credentials.java:112)

        at com.google.auth.Credentials$1.run(Credentials.java:98)

        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

        at java.base/java.util.concurrent.FutureTask.run(Unknown Source)

        at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)

        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

        at java.base/java.lang.Thread.run(Unknown Source)

}.

Once re-authenticated, (obtained new refresh token, it starts to work without above exception being thrown.

[Google Ads API Forum Advisor Prod]

Hi Nenad,

Thank you for reaching out. Normally you wouldn’t need to change any OAuth setting when you switch from AdWords API to Google Ads API. However, if this does happen, I would suggest you regenerate the OAuth2 credentials by following this guide and make the call again. Give it a try and let us know if the issue persists.

Thanks and regards,
Xiaoming, Google Ads API Team

 

Xiaoming Google Ads API Team

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