Error Code

If an error occurs in an API, no result is returned. You can locate the error cause based on the error codes of each API. When the invocation fails, an HTTP status code is returned. The returned message body contains the specific error code and information.

If an error code starting with APIGW is returned after you call an API, rectify the fault by referring to the instructions provided in API Gateway Error Codes.

Error Code Description

**Table 1** Error code description
Status Code	Error Code	Error Information	Description	Handling Measure
400	DBS.200001	Parameter Error	Parameter error.	Check whether the transferred parameters or URLs are correct.
404	DBS.200002	The DB instance does not exist.	Instance not found.	Check whether the DB instance and its ID are correct and whether the DB instance exists.
400	DBS.200004	Operation is illegal.	Invalid operation.	Check whether the operation meets the API requirements.
400	DBS.200010	Authentication failed.	Authentication failed.	Check whether the tenant and instance match.
403	DBS.200011	This instance {0} status makes it not be allowed to do this {1} operation now.	Operation cannot be executed in current state of the DB instance.	Check whether the instance status or the ongoing operation on the instance conflicts with the request.
404	DBS.200013	This node does not exist.	No nodes found.	Check whether the node ID or group ID is correct.
403	DBS.200018	Operation cannot be executed in current state of the DB instance.	Operation cannot be executed in current state of the DB instance.	Check whether the instance status or the ongoing operation on the instance conflicts with the request.
403	DBS.200019	Another operation is being performed on the DB instance or the DB instance is faulty.	Another operation is being performed on the DB instance or the DB instance is faulty.	Check whether the instance status or the ongoing operation on the instance conflicts with the request.
400	DBS.200024	The region is unavailable.	The region is unavailable.	Check whether the region name is correct and whether the region is available.
400	DBS.200025	Invalid AZ.	Invalid AZ.	Check whether the AZ name is correct and whether the AZ is available.
403	DBS.200028	Volume size reach limit.	The maximum storage space has been reached.	Check whether the storage space exceeds the upper limit.
400	DBS.200029	Invalid username and password.	Invalid username and password.	Check whether the username and password match and whether the password meets the password strength requirements.
400	DBS.200041	Invalid datastore version.	Invalid database version.	Check whether the database version is supported.
404	DBS.200042	Invalid database engine.	Invalid DB engine.	Check whether the DB engine is supported by DDS.
400	DBS.200047	Operation cannot be executed in current state of the DB instance or node.	Operation cannot be executed in current state of the DB instance or node.	Check whether the instance status or the ongoing operation on the instance conflicts with the request.
400	DBS.200048	Invalid VPC.	Invalid VPC.	Check whether the VPC ID and name are correct and meet the requirements.
400	DBS.200049	Invalid subnet.	Invalid subnet.	Check whether the subnet ID and name are correct and meet the requirements.
400	DBS.200050	Invalid security group.	Invalid security group.	Check whether the security group ID and name are correct and meet the requirements.
400	DBS.200052	Invalid password.	Invalid password.	Check whether the username and password match and whether the password meets the password strength requirements.
400	DBS.200053	The DB instance specifications do not exist.	Instance specifications not found.	Check whether the specifications are correct and supported in the current AZ.
400	DBS.200054	Invalid DB instance specifications.	Invalid DB instance specifications.	Check whether the specifications are correct and supported in the current AZ.
400	DBS.200057	Invalid parameter group ID.	Invalid parameter template ID.	Check whether the parameter template is correct, whether the parameter template exists, and whether the parameter template matches the instance type.
400	DBS.200058	Parameter template does not exist.	Parameter template not found.	Check whether the parameter template exists.
400	DBS.200059	Invalid database port.	Invalid database port.	Check whether the database port is missing or valid.
400	DBS.200060	The database port is out of range.	The database port number is out of the specified range.	Check whether the database port is valid.
400	DBS.200068	Weak password.	Weak password.	Check whether the password meets the requirements. Enter a strong password.
400	DBS.200072	Invalid storage space.	Invalid storage space.	Check whether the storage space exceeds the upper limit.
400	DBS.200075	Invalid node role.	Invalid node role.	Check whether the role of the node meets the requirements and whether the instance is normal.
403	DBS.200076	Operation cannot be executed in current state of the DB instance.	Operation cannot be executed in current state of the DB instance.	Check whether the instance status or the ongoing operation on the instance conflicts with the request.
400	DBS.200077	Failed to change the password.	Failed to reset the password.	Check whether the user name is correct.
400	DBS.200091	Invalid IP address.	Invalid IP address.	Check whether the required IP address is missing or whether the input IP address is valid.
400	DBS.200092	The IP address already exists.	The IP address already exists.	Check whether the IP address exists.
400	DBS.200095	Invalid parameter.	Parameter error.	Check whether the parameters in the request and URLs are correct.
400	DBS.200302	The storage space must be a multiple of 10.	The storage space must be a multiple of 10.	Check whether the storage space is a multiple of 10.
400	DBS.200303	The maximum number of times that the storage space can be scaled up has been reached.	The maximum number of times that the storage space can be scaled up has been reached.	The maximum number of times that the storage space can be scaled up has been reached. To continue to scale up the storage space, contact technical support.
400	DBS.200304	The storage space can be scaled up for a maximum of four times.	The storage space can be scaled up a maximum of four times.	Check whether the instance has been scaled up for multiple times.
400	DBS.200306	Invalid storage space.	Invalid storage space.	Check whether the storage space is correct and meets the requirements.
400	DBS.200311	Scaling up storage space is not allowed in current state of the node.	Scaling up the storage space is not allowed in current state of the node.	Check whether the node type, instance type, and node ID are correct.
400	DBS.200434	Failed to restart the DB instance.	Failed to restart the DB instance.	Check whether the DB instance status is normal and whether other operations are being performed on the DB instance.
400	DBS.200451	The node does not exist.	Node not found.	Check whether node ID is correct.
400	DBS.200462	The database port is the same as the current port.	The database port is the same as the current port.	Check whether the new port number is the same as the original port number.
400	DBS.200470	Invalid AZ.	Invalid AZ.	Check whether the AZ is correct.
400	DBS.200501	The subnet does not exist.	Subnet deleted.	Check whether the subnet ID and name exist and match the VPC.
400	DBS.200502	The security group does not exist.	The security group is not found or does not belong to the VPC.	Check whether the security group ID and name exist and match the VPC.
400	DBS.200503	The VPC does not exist.	VPC deleted.	Check whether the tenant has the VPC.
400	DBS.200506	The encryption key does not exist.	The encryption key not found.	Check whether the disk encryption key ID exists.
400	DBS.200507	The encryption key is not available.	The encryption key is not available.	Check whether the disk encryption key is available.
403	DBS.200604	InstanceId and userId may be null, or an unauthorized operation has been issued.	The instance is not owned by the current user.	Check whether the project ID is subordinate to the instance ID.
400	DBS.200700	The EIP status does not allow EIP binding.	The EIP is being bound. Not allowed to bind the EIP again.	Check whether the instance is being bound to an EIP.
400	DBS.200701	The EIP status does not allow EIP unbinding.	Unbinding the EIP is not allowed due to the EIP status.	Check whether the operation is allowed by the EIP status.
400	DBS.200702	The node has been bound to a public IP address and cannot be bound again.	The node has been bound to a public IP address and cannot be bound again.	Check whether a public IP address has been bound to the node.
400	DBS.200816	Failed to create the database user.	Failed to create a database user.	Check whether the database user name is valid and check the database status and instance status.
400	DBS.200817	Failed to obtain the database user list.	Failed to obtain the database user list.	Check the database status and instance status.
400	DBS.200818	Failed to delete the database user.	Failed to delete a database user.	Check the database status and instance status.
400	DBS.200823	The database does not exist.	Database not found.	Check whether the database name is valid.
400	DBS.200824	The database account does not exist.	Database account not found.	Check whether the database username is valid.
400	DBS.200826	The database name already exists.	The database name already exists.	Check whether the database name is valid.
400	DBS.200827	The database user already exists.	The database account name already exists.	Check whether the database user is valid.
400	DBS.200828	Built-in database accounts cannot be edited.	This is an internal account of the database and cannot be operated by users.	Check whether the database user is valid.
400	DBS.200998	The system is busy. Try again later.	The system is busy. Try again later.	The system is busy. Try again later.
403	DBS.201000	The status of DB instance {0} does not allow the {1} operation.	Operation cannot be executed in current state of the DB instance.	Check whether the instance status or the ongoing operation on the instance conflicts with the request.
400	DBS.201006	Parameter error.	Parameter error.	Check whether the transferred parameters or URLs are correct.
403	DBS.201014	Operation cannot be executed in current state of the DB instance.	Operation cannot be executed in current state of the DB instance.	Check whether the instance status or the ongoing operation on the instance conflicts with the request.
403	DBS.201015	This operation cannot be performed because another operation is being performed on the DB instance or the DB instance is faulty. Try again later.	This operation cannot be performed because another operation is being performed.	Check whether the instance status or the ongoing operation on the instance conflicts with the request.
400	DBS.201020	Invalid DB engine.	Invalid DB engine.	Check whether the DB engine is supported by DDS.
403	DBS.201028	The DB instance does not exist.	Instance not found.	Check whether the DB instance belongs to the tenant and whether the DB instance exists.
400	DBS.201035	The database name must be different.	The database name already exists.	Check whether the same database name exists.
400	DBS.201038	The collection name must be different.	The collection name already exists.	Check whether the same collection name exists.
400	DBS.201101	Invalid backup period.	Invalid backup period.	Check whether the backup cycle meets the requirements.
400	DBS.201202	Operation cannot be executed in current state of the DB instance.	Operation cannot be executed in current state of the DB instance.	Check whether the instance status or the ongoing operation on the instance conflicts with the request.
400	DBS.201204	Operation cannot be executed in current state of the DB instance.	The backup file does not exist.	Check whether the backup file exists and matches the instance.
400	DBS.201212	Backup ID is illegal.	Invalid backup ID.	Check whether the backup ID exists.
400	DBS.201214	The backup file does not exist.	Backup file not found.	Check whether the backup exists and matches the instance.
400	DBS.201215	Time is illegal.	Invalid time.	Check whether the time meets the requirements.
400	DBS.201319	Deleting backup file is not allowed because a restoration task is currently in progress. Please wait.	Original backup file cannot be deleted during restoration.	Check whether the backup is being used to restore instances.
400	DBS.201501	The DB instance does not exist.	Instance not found.	Check whether the tenant has the DB instance, whether the DB instance name or ID is correct, and whether the DB instance exists.
400	DBS.201502	The DB instance does not exist.	Instance not found.	Check whether the tenant has the DB instance, whether the DB instance name or ID is correct, and whether the DB instance exists.
500	DBS.201509	Failed to access OBS.	The OBS service system is faulty.	An internal error occurs. Contact the O&M personnel to locate the fault.
404	DBS.212001	The parameter group {0} does not exist.	Parameter template not found.	Check whether the parameter template exists.
400	DBS.212002	The number of para groups exceeds quota.	The number of parameter templates exceeds the quota.	Delete unnecessary parameter groups and create the parameter group again.
400	DBS.212003	This operation is not permitted.	Operation not allowed.	Check whether the instance status or the ongoing operation on the instance conflicts with the request.
400	DBS.212006	The node associated with this parameter group is not available.	The node associated with this parameter template is not available.	Check whether the node that is associated with the parameter template is normal.
400	DBS.212008	The database type does not exist.	Unsupported database version.	Check whether the database type is supported
400	DBS.212013	The parameter group does not exist.	Parameter template not found.	Check whether the parameter exists.
400	DBS.212017	The parameter is invalid.	Invalid parameter.	Check whether the transferred parameters or URLs are correct and meet the requirements.
400	DBS.212019	Invalid parameter.	Invalid parameter.	Check whether the transferred parameters or URLs are correct and meet the requirements.
400	DBS.212028	Invalid description.	Invalid parameter template description.	Check whether the parameter template description is valid.
400	DBS.212030	The parameter group name already exists.	The parameter group name already exists.	Check whether the parameter template name is correct and whether the tenant has created the parameter template.
400	DBS.212031	Invalid parameter group name.	Invalid parameter template name.	Check whether the parameter template name meets the requirements:
400	DBS.212032	The operation cannot be performed because this parameter group is being applied to one or more DB instance nodes.	The operation cannot be performed because this parameter template is applied to one or more DB instance nodes.	Check whether the parameter template has been applied to the instance.
400	DBS.216026	The node does not exist.	Node not found.	Check whether the input node exists and belongs to the current instance.
403	DBS.216030	The queried node does not belong to the current instance.	The queried node does not belong to the current instance.	Check whether the input node belongs to the current instance.
400	DBS.216031	Invalid entity id.	Invalid entityId.	Check whether the value of entityId is correct.
400	DBS.238007	This operation cannot be performed in the current IP address status.	This operation cannot be performed in the current IP address status.	Check whether the delivered IP address is in use.
400	DBS.239011	Invalid SSL option.	Invalid SSL option.	Check whether the SSL parameter is missing or whether the SSL option is valid.
400	DBS.239012	The specifications are improper.	The specifications are improper.	Check whether the specifications are proper when the backup of an Enhanced Edition instance is restored to a new instance.
400	DBS.239014	Failed to create the database role.	Failed to create a database role.	Check the database status and instance status.
400	DBS.239015	Failed to obtain the database role list.	Failed to obtain the database role list.	Check the database status and instance status.
400	DBS.239016	Invalid database role.	Invalid database role.	Check whether the role meets the requirements and check the database status and instance status.
400	DBS.239017	The database role name already exists.	The database role name already exists.	Check whether the database role exists.
400	DBS.239018	The database role does not exist.	Database role not found.	Enter an existing database status.
400	DBS.239019	Invalid database permission.	Invalid database permission.	Check whether the database permission is valid.
400	DBS.239020	Invalid database name.	Invalid database name.	Check whether the database name is valid.
400	DBS.239021	Roles in the non-admin databases cannot be inherited from other databases.	Roles in the non-admin databases cannot be inherited from other databases.	Check whether the data role is valid.
400	DBS.239022	Cannot use database built-in roles.	This is an internal database role and cannot be operated by users.	Check whether the role is valid.
400	DBS.239023	Invalid auditlog ID.	Invalid audit log ID.	Check whether the audit log ID is valid.
400	DBS.239024	The auditlog does not exist.	The audit log does not exist.	Check whether the audit log exists.
400	DBS.239025	Invalid auditlog scope.	Invalid audit scope.	Check whether the audit scope is valid.
400	DBS.239026	Invalid auditlog type.	Invalid audit type.	Check whether the audit type is valid.
400	DBS.239027	Invalid restore type.	Invalid restoration type.	Check whether the restoration type is valid.
400	DBS.239028	Invalid table name.	Invalid table name.	Check whether the table name is valid.
400	DBS.239029	Failed to delete database role.	Failed to delete the database role.	Check whether the database role exists and whether the instance status is normal.
400	DBS.239031	Invalid balancer action.	The balancer switching is invalid	Check whether the action parameter is correct.
400	DBS.239032	Invalid balancer window.	Invalid balancer window	Check whether the startTime and stopTime parameters are correct.
400	DBS.239033	Balancer window not supported.	Versions earlier than DDS 4.0 do not support the setting of the balancer window	Frozen instances and instances of versions earlier than DDS 4.0 do not support the setting of the balancer window.
400	DBS.280001	Parameter error.	Parameter error.	Check whether the transferred parameters or URLs are correct and meet the requirements.
400	DBS.280004	Operate type illegal.	Invalid operation.	Check whether the operation meets the API requirements.
500	DBS.280005	Server error. Try again later.	Server error. Try again later.	Contact technical support engineers.
400	DBS.280015	Permission denied.	Insufficient permissions.	Check whether the token expires and whether the instance matches the tenant.
404	DBS.280016	Resource not found.	Resource not found.	Check whether the transferred parameters are correct and whether the instance exists.
403	DBS.280019	Account suspended.	Account suspended.	Check the account balance.
403	DBS.280032	You do not have permission to perform this operation. Contact the administrator to obtain permission.	Permission denied.	Check whether the user group to which the current user belongs has the corresponding operation permission.
403	DBS.280042	Invalid request.	Invalid request.	Check whether the request is allowed by the current instance status and the operations being performed on the instance and whether the request is valid.
403	DBS.280056	Invalid token.	Invalid token.	Check whether the instance belongs to the tenant and whether the token has been obtained again.
403	DBS.280063	You do not have following permission to perform this operation: {0}. Contact the administrator to obtain permission.	Permission denied. Contact the account administrator for authorization	Check whether the user group to which the current user belongs has the corresponding operation permission.
401	DBS.280064	Check PDP permissions failed.	Fine-grained authentication failed.	Contact the customer service.
400	DBS.280066	Invalid log type.	Invalid log type.	Check whether the log type meets the requirements.
400	DBS.280067	Invalid start time.	Invalid start time.	Check whether the start time meets the requirement.
400	DBS.280068	Invalid end time.	Invalid end time.	Check whether the end time meets the requirement.
400	DBS.280110	The DB instance does not exist.	Instance not found.	Check whether the tenant has the DB instance, whether the DB instance name or ID is correct, and whether the DB instance exists.
400	DBS.280122	Invalid DB engine.	Invalid storage engine.	Check whether the storage engine matches the instance engine.
400	DBS.280123	Invalid node number.	Invalid node quantity.	Check whether the number of nodes to be added to the instance meets the requirements.
400	DBS.280124	Invalid backup.	Invalid backup ID.	Check whether the backup ID is correct and meets the requirements.
400	DBS.280127	Invalid backup description.	Invalid backup description.	Check whether the backup description is correct and meets the requirements.
400	DBS.280200	The password contains invalid characters.	The password contains invalid characters.	Check whether the password is correct and meets the requirements.
400	DBS.280214	Invalid retention period.	Invalid retention period.	Check whether the backup retention period is correct.
400	DBS.280215	Invalid backup cycle.	Invalid backup period.	Check whether the backup start time, end time, and backup cycle are correct and meet the requirements.
400	DBS.280216	Invalid backup start time.	Invalid backup start time.	Check whether the backup start time meets the requirements and whether the relationship between the backup start time and end time is correct.
400	DBS.280234	Invalid DB instance name.	Invalid DB instance name.	Check whether the instance name is correct and whether the instance exists.
400	DBS.280235	Invalid database type.	Invalid database type.	Check whether the database type is correct.
400	DBS.280236	Invalid database version.	Invalid database version.	Check whether the database version is supported.
400	DBS.280237	DataStore is invalid.	Invalid database information.	Check whether the database information is correct.
400	DBS.280239	Invalid specifications.	Invalid specifications.	Check whether the specification code is correct, whether the specification exists in the current AZ, and whether the specification is supported.
400	DBS.280241	Invalid storage type	Invalid storage type.	Check whether the storage type is correct and meets the requirements.
400	DBS.280242	The storage space is out of range.	The storage space is out of range.	Check whether the disk size is correct.
400	DBS.280244	Invalid AZ.	Invalid AZ.	Check whether the parameters of the AZ are correct, whether the AZ exists, and whether the AZ matches the specifications.
400	DBS.280247	Invalid VPC.	Invalid VPC.	Check whether the VPC ID is correct and whether the VPC exists.
400	DBS.280248	Invalid subnet.	Invalid subnet.	Check whether the subnet ID is correct and whether the subnet exists.
400	DBS.280249	Invalid security group.	Invalid security group.	Check whether the security group ID is correct and whether the security group exists.
400	DBS.280266	Invalid storage space.	Invalid storage space.	Check whether the storage space is correct and meets the requirements.
400	DBS.280267	Specifications not match.	Specifications do not match.	Check whether the specification information is correct and whether the specification matches the instance.
400	DBS.280271	Parameter value out of range.	The parameter value is too long.	Check whether the length of the parameter value is correct.
400	DBS.280277	Invalid backup name.	Invalid backup name.	Check whether the backup name is correct and meets the requirements.
400	DBS.280280	Invalid DB instance number.	Invalid instance quantity.	Check whether the number of DB instances is correct and meets the requirements.
400	DBS.280284	Invalid IP address.	Invalid IP address.	Check whether the IP address is correct and meets the requirements.
400	DBS.280292	Invalid database username.	Invalid username.	Check whether the username is correct and meets the requirements.
400	DBS.280311	Invalid storage space.	Invalid storage space.	Check whether the storage space is correct and meets the requirements.
400	DBS.280314	Invalid storage space.	Invalid storage type.	Check whether the storage type is correct and whether the instance supports the disk type.
400	DBS.280327	Invalid node type.	Invalid node type.	Check whether the node type is correct, whether the node type matches the instance, and whether the node type matches the group ID and node ID.
406	DBS.280328	Invalid DB instance type.	Invalid DB instance type.	Check whether the instance type is correct.
400	DBS.280342	Invalid DB instance mode.	Invalid DB instance mode.	Check whether the instance mode is correct and whether the instance mode matches the instance ID.
400	DBS.280343	Unsupported operation.	The operation is not supported.	Check whether the instance and node meet the API requirements.
400	DBS.280347	Unsupported database type.	Unsupported database type.	Check whether the DB instance type is correct and meets the requirements.
400	DBS.280361	Invalid file name.	Invalid file name.	Check whether the input file name is correct and meets the requirements.
400	DBS.280365	Invalid payment mode.	Invalid payment mode.	Check whether the payment mode is correct and meets the requirements.
400	DBS.280366	Invalid order ID.	Invalid order ID.	Check whether the yearly/monthly order ID is transferred and meets the requirements.
400	DBS.280404	Invalid DB instance ID.	Invalid DB instance ID.	Check whether the instance ID is correct and meets the requirements.
403	DBS.280406	The DB instance cannot be deleted.	The DB instance cannot be deleted.	Check whether the instance deletion operation is supported by the DB engine and billing mode.
400	DBS.280407	Invalid node ID.	Invalid node ID.	Check whether the node ID is correct and meets the requirements.
400	DBS.280408	Invalid project id.	Unauthorized tenant ID	Check whether the tenant ID is correct and meets the requirements.
400	DBS.280409	Invalid date.	Invalid time format.	Check whether the time format and content are correct and meet the requirements.
400	DBS.280414	Invalid group type.	Invalid group type.	Check whether the group type is correct, whether the group type matches the instance, and whether the node type matches the group ID.
400	DBS.280416	Invalid backup end time.	Invalid end time	Check whether the end time is missing and whether the end time period and format meet the requirements.
400	DBS.280421	Invalid EIP.	Invalid EIP.	Check whether the EIP exists and meets the requirements.
400	DBS.280431	Invalid package type.	Invalid yearly/monthly billing mode.	Check whether the value of period_type meets the requirements.
400	DBS.280432	Invalid duration for yearly/monthly DB instances.	Invalid yearly/monthly duration.	Check whether the value of period_num meets the requirements.
403	DBS.280433	Invalid enterprise project ID.	Invalid enterprise project ID.	Check whether the enterprise project ID is valid.
400	DBS.280434	The specifications are unavailable.	Invalid resource specifications code.	Check whether the resource specifications code exists and meets the requirements.
400	DBS.280437	Not support enterprise project.	Multi-project management not supported.	The current user has not enabled the enterprise multi-project service. Enable the enterprise multi-project service or do not transfer related parameters.
400	DBS.280438	Invalid encryption key.	Invalid encryption key ID.	Check whether the disk encryption key ID in the request is created and available, and whether the current DB engine supports disk encryption.
400	DBS.280439	Invalid limit.	Invalid query limit.	Check whether the value of the limit parameter is valid.
400	DBS.280440	Invalid offset.	Invalid offset.	Check whether the value of the offset parameter is valid.
400	DBS.280441	Invalid key.	Invalid key.	Check whether the tag key is valid.
429	DBS.280443	The maximum number of connections has been reached.	The maximum number of connections has been reached.	APIs are frequently called by the same tenant. Reduce the frequency of API calls.
400	DBS.280445	The DB instance class is not available.	The DB instance class is not available.	The current DB instance class is unavailable. Select another one.
400	DBS.280446	The database information does not exist.	Database information not found.	Check whether the datastore field exists.
400	DBS.280453	Invalid DSS storage pool ID.	Invalid DSS storage pool ID.	Check whether the storage pool ID is correct.
400	DBS.280456	This operation is not supported by the current billing mode.	This operation is not supported by the current billing mode.	Check whether the billing mode of the current instance meets the API requirements.
400	DBS.280469	Invalid ECS group policy.	Invalid ECS group policy.	Check whether the policy associated with the ECS group is correct.
400	DBS.280482	Invalid user tag key.	Invalid user tag key.	Check whether the tag key is valid.
400	DBS.280483	Invalid tag value.	Invalid tag value.	Check whether the tag key is valid.
400	DBS.280484	Tag number reach limit.	There are too many tags.	Check whether the number of tags is correct.
400	DBS.290000	Parameter error.	Parameter error.	Check whether the transferred parameters or URLs are correct and meet the requirements.
400	DBS.301024	Invalid backup restore information.	Invalid backup and restoration information.	Check whether the backup and restoration information is valid.
400	DBS.301071	Invalid session id.	Invalid session ID.	Check whether the session ID is correct and meets the requirements.
400	DBS.301072	Invalid plan summary.	Invalid execution plan.	Check whether the execution plan is correct and meets the requirements.
400	DBS.301073	Invalid operation type.	Invalid operation type.	Check whether the operation type is correct and meets the requirements.
400	DBS.301074	Invalid namespace.	Invalid namespace.	Check whether the namespace is correct and meets the requirements.
400	DBS.301075	Invalid cost time.	Invalid execution time.	Check whether the execution time is correct and meets the requirements.
400	DBS.301076	Query session failed.	Failed to query the session.	Contact customer service to check the instance status.
400	DBS.301077	Kill session failed.	Failed to kill the session.	Contact customer service to check the instance status.
400	DBS.301079	Query OS version failed.	Failed to query the OS version.	Contact the customer service.