| API has been frozen, please contact customer service | 400 | 50100 |
| APIKey does not match the current environment | 401 | 50101 |
| Request timestamp has expired | 401 | 50102 |
| Request header "DC-ACCESS-KEY" cannot be empty | 401 | 50103 |
| Request header "DC-ACCESS-PASSPHRASE" cannot be empty | 401 | 50104 |
| Request header "DC-ACCESS-PASSPHRASE" is incorrect | 401 | 50105 |
| Request header "DC-ACCESS-SIGN" cannot be empty | 401 | 50106 |
| Request header "DC-ACCESS-TIMESTAMP" cannot be empty | 401 | 50107 |
| Broker ID does not exist | 401 | 50108 |
| Broker domain does not exist | 401 | 50109 |
| Invalid IP | 401 | 50110 |
| Invalid DC-ACCESS-KEY | 401 | 50113 |
| Invalid DC-ACCESS-TIMESTAMP | 401 | 50112 |
| Invalid signature | 401 | 50111 |
| Invalid authorization | 401 | 50114 |
| Invalid request type | 405 | 50115 |