| 403 | InstanceExisted | The specified instance already exists. | - | diagnosis |
| 403 | InstanceNoEnoughNumber | The maximum number of instances allowed for the enterprise is exceeded. | - | diagnosis |
| 500 | InternalError | Internal server error. | - | diagnosis |
| 403 | NoPermission | You are not authorized to perform this operation. | - | diagnosis |
| 403 | NotSupportYet | This feature is not supported. | - | diagnosis |
| 404 | SecurityRuleNotExist | The specified security rule does not exist. | - | diagnosis |
| 404 | TenantExpired | The tenant has expired. | - | diagnosis |
| 404 | TenantNotExist | The specified tenant does not exist. | - | diagnosis |
| 404 | TenantStatusIllegal | The tenant status is invalid. | - | diagnosis |
| 403 | UserExisted | The specified user already exists. | - | diagnosis |
| 403 | UserNoEnoughNumber | The maximum number of users allowed for the enterprise is exceeded. | - | diagnosis |
| 404 | UserStatusIllegal | The user status is invalid. | - | diagnosis |
| 404 | UserNotExist | The specified user does not exist in DMS, Please contact Admin to add your account UID into DMS. | The account used to call the API operation does not exist in DMS. Contact the administrator to add the UID of the account to DMS. | diagnosis |