Hello!
We are running into the following problem:
We have a platform where customers can connect their Google Ads account and
we fetch their campaigns / adgroups / ads etc. The flow is as follows:
1. The customer logs in with their Google Ads account.\
2. We get an auth token which we use to get a long-lived refresh token and
an access token
3. The customer selects an ad account.
4. We fetch the campaigns/adgroups/ads using the query endpoint every hour.
Now, suddenly, the following has started to happen:
1. We fetch the campaigns, and get the following error:
org.springframework.web.client.HttpClientErrorException$Unauthorized: 401
Unauthorized: "{<EOL> "error": {<EOL> "code": 401,<EOL> "message":
"Request had invalid authentication credentials. Expected OAuth 2 access
token, login cookie or other valid authentication credential. See
https://developers.google.com/identity/sign-in/web/devconsole-project.";,<EOL>
"status": "UNAUTHENTICATED"<EOL> }<EOL>}<EOL>"
2. We use our refresh token to generate a new access token (This succeeds,
important!)
3. We try to fetch the campaigns again, and we get the exact same error as
above.
4. We decide that we can no longer use the refresh token and drop the
Google Ads connection and send an email to the customer.
We are very confused why this error is happening for so many customers all
of a sudden, what could the possible reasons be? The customers that have
had this happen to them (many!) have contacted us and assured us that they
have not touched anything in regards to the permissions for our app.
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