2 results
2026-04-27
Troubleshooting
Token
Authentication
OAuth
Cannot obtain a token (authentication error)
How to narrow down a 400 or 401 from the token endpoint, with the fix for each error and error_description, including invalid_client and invalid_grant.
2026-04-27
Troubleshooting
User scopes
Review
app_not_approved is returned for User-scope calls
What to check when using a User-scope results in an app_not_approved error. Explains development with a sandbox slot, applying for review, and the flow from sandbox to production.