| decrypt_fail | parameter decryption failed | - |
| time_invalid | timestamp validation failed | - |
| referer_denied | referrer access denied | Adjust the site's "Associated Domains" list. |
| verify_limit | verification attempts limit reached | - |
| refresh_limit | refresh attempts limit reached | - |
| no_sitekey | site key not provided | Check and make sure you are using the correct sitekey. |
| sitekey_invalid | invalid site key | Check and make sure you are using the correct sitekey. |
| site_deleted | site has been deleted | Replace sitekey with the sitekey of the site that was not deleted. |
| site_paused | site has been paused | Start the site or replace the sitekey with the sitekey of the active site. |
| invalid_runtime_data | runtime data not provided | - |
| no_tno | trace number not found | - |
| tno_invalid | invalid trace number format | - |
| runtime_data_missing | runtime data missing | - |
| tno_missing | trace number data missing | - |
| tno_format_err | trace number format error | - |
| tno_mismatch | trace number does not match | - |
| tno_expired | trace number has expired | - |
| token_err | token processing failed | - |
| payload_err | payload data corrupted | - |
| payload_used | payload has been used | The same response is used for multiple server-side verifications. Beware of replay attacks. |
| runtime_err | system execution failure | Please try again later, or you can contact us with your response and sitekey information. |