I am Trying to set up Adwords API through Java, All the steps are going
good but in last step while running GetCampaigns.java , Its giving several
errors
"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:240)
at
adwords.axis.v201705.basicoperations.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:234)
... 1 more"
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