3 results
2026-04-27
API
Error codes
Retry
HTTP status
Error codes and retry guidance
Explains the list of HTTP status codes and error codes the ReceiptRoller API returns, which cases to retry, and guidance on retry intervals.
2026-04-27
Troubleshooting
Token
Authentication
OAuth
Cannot obtain a token (authentication error)
How to isolate the cause when you cannot obtain an access token. Explains the representative errors — invalid_client, invalid_grant, redirect_uri_mismatch — and what to do about them.
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.