| 400 | DomainNotExist | domain not exist. | 域名不存在 | 诊断 |
| 400 | DomainExist | domain is already exist. | 域名已存在。 | 诊断 |
| 400 | WebRulePortDeny | Web rule port is deny. | - | 诊断 |
| 400 | InvalidParameter.JSONError | Incorrect JSON format. | - | 诊断 |
| 400 | ExceedFuncSpec | Exceeds the func spec of the instalice. | - | 诊断 |
| 400 | ExceedNoStardardPort | func spec no stardard port limit. | - | 诊断 |
| 400 | InvalidWebRule | invalid Web rule. | 无效的转发规则。 | 诊断 |
| 400 | ExceedFuncSpec | out of specification. | - | 诊断 |
| 400 | NetworkRuleExist | network rule port is exist. | 规则已存在。 | 诊断 |
| 400 | NetworkRuleConflict | network rule conflict. | - | 诊断 |
| 400 | ExceedWebRuleLimit | reach site limit in spec. | 超过防护域名数规格。
| 诊断 |
| 400 | ExceedNetworkRuleLimit | reach port limit in spec. | - | 诊断 |
| 400 | InvalidDomain | invalid domain. | 无效域名 | 诊断 |
| 400 | UnBlackholeLimit | blockhole water level limit. | - | 诊断 |
| 400 | InvalidIp | invalid ip or ipnet, please check | - | 诊断 |
| 400 | DomainOwnerError | domain belong to other user. | 域名属于其他用户 | 诊断 |
| 400 | InvalidParams | no authority to do request. | - | 诊断 |
| 400 | SchedulerNameConflict | Scheduler name Conflict. | - | 诊断 |
| 400 | InvalidParams | illegal param. | - | 诊断 |
| 400 | CcRuleExist | cc rule exist. | - | 诊断 |
| 400 | DomainExist | domain exist in other account. | - | 诊断 |
| 400 | CDNDomainExist | cdn domain is exist. | cdn域名已经存在。 | 诊断 |
| 400 | IpBlackholing | ip blackhole event not end. | - | 诊断 |
| 400 | InvalidSwitch | record is the last in default line, invalid to switch to inactive. | 切换调度规则失败 | 诊断 |
| 400 | ParamsConflict | record type,value_type,line or region_id conflict. | - | 诊断 |
| 400 | InvalidParams | invalid params in request. | - | 诊断 |
| 400 | CertNotUpload | Cert not upload,plz upload cert first. | - | 诊断 |
| 500 | UnkownError | unknown error. | - | 诊断 |
| 400 | SelbCallFailed | selb central remote call failed. | 调用Selb失败 | 诊断 |
| 400 | ddos_layer73417 | domain https extend config without https proxy. | - | 诊断 |
| 400 | ddos_layer73418 | domain http2https config invalid, https proxy port 443 not exis. | - | 诊断 |
| 400 | ddos_layer73422 | domain https proxy delete but https_ext config exist. | - | 诊断 |
| 400 | ddos_layer73423 | domain http2https config without http proxy. | - | 诊断 |
| 400 | DashboardParamError | Required parameters cannot be empty. | - | 诊断 |
| 400 | TooManyRs | too many rs in domain. | - | 诊断 |
| 400 | InvalidJsonParam | decoding json failed. | 无效的JSON参数 | 诊断 |
| 400 | ddos_layer763101 | No CNAME exists. | - | 诊断 |
| 400 | ddos_coop3004 | The specified action is invalid | - | 诊断 |
| 400 | ddos_coop3304 | The specified origin server IP is invalid | - | 诊断 |
| 400 | ddos_coop3006 | An error occurred while querying the database | - | 诊断 |
| 400 | ddos_coop3301 | Cannot find the specified instance | - | 诊断 |
| 400 | ddos_layer763103 | Failed to create the rule | - | 诊断 |
| 400 | NoDomainExist | domain not exist | - | 诊断 |
| 400 | ddos_layer73424 | domain http2https config config with websocket proxy | - | 诊断 |
| 400 | SetL7DefenseError | remote call L7 defense failed | - | 诊断 |
| 400 | QueryDbFailed | query db failed | - | 诊断 |
| 400 | CustomHeaderNotValid | custom header format error or length is too long | - | 诊断 |
| 400 | DomainRemarkValid | remark is empty or length too long | - | 诊断 |
| 400 | ReservedValueNotEmpty | value of reserved header should be empty | - | 诊断 |
| 400 | NoReservedValueEmpty | value of no reserved header should not be empty | - | 诊断 |
| 400 | DomainAbnormalStatus | domain in abnormal status, may be punished | - | 诊断 |
| 400 | NetworkRuleExist | Network rule port is exist. | 规则已存在。 | 诊断 |
| 400 | InstanceNotExist | Instance not exist. | 实例不存在 | 诊断 |
| 400 | anycast_controller3302 | reache port limit in spec. | - | 诊断 |
| 400 | anycast_controller3306 | forwarding rules already exist. | - | 诊断 |
| 400 | anycast_controller3006 | record query failure. | - | 诊断 |
| 400 | ExceedPortNumber | udp reflect source ports number reached limit. | - | 诊断 |
| 400 | EngineParamError | The same CC rules exist. | 存在相同的CC规则。 | 诊断 |
| 400 | InvalidCacheRuleFormat | The cache rule format error. | - | 诊断 |
| 400 | InvalidCacheRuleNum | invalid cache rule num. | - | 诊断 |
| 400 | InvalidCacheRuleMode | invalid cache rule mode. | - | 诊断 |
| 400 | DuplicateCacheRuleName | duplicate cache rule name. | - | 诊断 |
| 400 | DuplicateCname | duplicate cname. | - | 诊断 |
| 400 | ddos_global3440 | Defense instance num is out of limit. | - | 诊断 |
| 400 | ddos_global3441 | Error when create defense instance. | - | 诊断 |
| 400 | ddos_global3442 | Defense instance not belong to you. | - | 诊断 |
| 400 | ddos_global3443 | Error when delete defense instance. | - | 诊断 |
| 400 | ddos_global3444 | Error when search defense instance. | - | 诊断 |
| 400 | ddos_global3445 | The defense instance is not exist. | - | 诊断 |
| 400 | ddos_global3446 | The defense instance global attr error. | - | 诊断 |
| 400 | ddos_global3447 | Call l7 proxy error. | - | 诊断 |
| 400 | ddos_global3448 | Query instance lb error. | - | 诊断 |
| 400 | ddos_coop3320 | Primary rs can is empty. | - | 诊断 |
| 400 | ddos_coop3321 | Secondary rs is empty. | - | 诊断 |
| 400 | ddos_coop3322 | The current valid source address is empty. | - | 诊断 |
| 400 | ddos_coop3323 | The active/standby mode is incorrect. | - | 诊断 |
| 400 | ddos_coop3324 | The valid source address group can only be active or standby. | - | 诊断 |
| 400 | ddos_coop3325 | Note Format is incorrect or the limit is exceeded. | - | 诊断 |
| 400 | QpsReachLimit | ops qps reach the limit, can not enable elastic qps | - | 诊断 |
| 400 | OverseasQpsReachLimit | ops qps reach the limit, can not enable elastic qps | - | 诊断 |
| 400 | NoSupportOperation | Ipv6 no support open elastic qps | - | 诊断 |
| 400 | ErrDdosSpecLimit | Error ddos spec limit. | 规格超限 | 诊断 |
| 400 | InternalParamError | out of range. | 参数不合法 | 诊断 |
| 400 | ParamError | out of range. | 参数不合法 | 诊断 |
| 400 | NotSupportLayer4Proxy | eip not support for l4 proxy. | 不支持开启应用层防护 | 诊断 |
| 400 | Layer4ProxyPayloadRuleOverLimit | l4 proxy payload rules reached limit. | Payload策略规则超限 | 诊断 |
| 400 | Layer4ProxyPayloadRuleConflict | l4 proxy payload rule conflict. | Payload策略规则冲突 | 诊断 |
| 400 | NotEffectLayer4Proxy | l4 proxy not effect. | 应用层防护不生效 | 诊断 |