We're doing a high volume of "getToken" requests (supplying a code) using the OAuth2 client from the "googleapis" npm package (version 14.2.0).
Out of 84,940 successful requests within a 24 hour period, 290 fail with the notorious "invalid_grant" error. We've checked everything found in this question , but are still experiencing these errors. Obviously this is a very small error rate (< 0.5%), probably within acceptable range if these were general errors from Google (500).
- Can "invalid_grant" also represent general errors? If so, we'd be inclined to just ignore these errors as part of the reality of doing so many logins.
- If not, are there ways to dig deeper into the issue?