Error Codes

If an error occurs during API calling, no results will be returned. You can locate the error cause based on error codes of each API. If an error occurs, an HTTP status code is returned. The returned message body contains a specific error code and error message.

Error Code Description

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

**Table 1** Error code description
HTTP Status Code	Error Code	Error Message	Description	Handling Measure
400	DBS.200001	Parameter error.	Parameter error.	Check whether transferred parameters or URLs are correct.
404	DBS.200002	The DB instance does not exist.	Instance not found.	Check whether the instance and its ID are correct and whether the instance exists.
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 performed in current state of the 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.	Node not found.	Check whether the node ID or group ID is correct.
403	DBS.200018	This instance's status or its node's status makes it not be allowed to do this operation now.	Unavailable 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.	Operation cannot be performed in current state of the instance.	Check whether the instance status or the ongoing operation on the instance conflicts with the request.
400	DBS.200022	The DB instance name {0} already exists.	Instance name already exists.	Check whether the instance name exists.
400	DBS.200024	The region is unavailable.	Unavailable region.	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.	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 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 API.	Check whether the DB version is supported.
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 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 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 instance specifications.	Check whether the specifications are correct and supported in the current AZ.
400	DBS.200057	Invalid parameter group ID.	Invalid parameter template.	Check whether the parameter template is supported.
404	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 number is out of the specified range.	Database port is not in the specified range.	Check whether the database port is valid.
400	DBS.200063	Invalid DB instance type.	Invalid instance type.	Check whether the instance type is valid.
400	DBS.200068	Weak password.	Weak password.	Password is too easy to guess. Change it to 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 performed in current state of the 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.	Updating password failed.	Check whether the username 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.	IP address already exists.	Check whether the IP address exists.
400	DBS.200095	Invalid parameter.	Parameter error.	Check whether parameters in the request and URLs are correct.
500	DBS.200165	Insufficient enterprise project instance quota range.	Enterprise project quota of the instance is insufficient.	Increase the enterprise project quota on the GeminiDB console.
500	DBS.200166	Insufficient enterprise project cpu quota range.	CPU quota of the enterprise project is insufficient.	Increase the CPU quota on the GeminiDB console.
500	DBS.200167	Insufficient enterprise project mem quota range.	Memory quota of the enterprise project is insufficient.	Increase the memory quota on the GeminiDB console.
400	DBS.200302	The storage space increase must be a positive integer.	Storage space increase is not a positive integer.	Check whether the storage space increase is a positive integer.
400	DBS.200303	The maximum number of times that the storage space can be scaled up has been reached.	Storage space has reached its upper limit and cannot be scaled up anymore.	Contact technical support to scale upt the storage space.
400	DBS.200304	The storage space can be scaled up for a maximum of four times.	Storage space can be scaled up at most four times.	Check how many times the instance has been scaled up.
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 storage space not allowed on the current node.	Check whether the node type, instance type, and node ID are correct.
400	DBS.200434	Failed to restart the DB instance.	Restarting instance failed.	Check whether the instance is available or ongoing other operations.
400	DBS.200451	The node does not exist.	Node not found.	Check whether the node ID is correct.
400	DBS.200462	The database port is the same as the current port.	Database port is the same as 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 whether the subnet matches the VPC.
400	DBS.200502	The security group does not exist.	Security group is not found or does not belong to the VPC.	Check whether the security group ID and name exist and whether the security group matches the VPC.
400	DBS.200503	The VPC does not exist.	VPC deleted.	Check whether the VPC is available to the tenant.
400	DBS.200506	The encryption key does not exist.	Storage encryption key ID not found.	Check whether the disk encryption key ID exists.
400	DBS.200507	The encryption key is not available.	Storage encryption key unavailable.	Check whether the disk encryption key is available.
400	DBS.200604	The instance is not owned by the current user.	Instance does not belong to 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.	EIP is being bound and cannot be bound again.	Check whether there is an EIP being bound to the instance.
400	DBS.200701	The EIP status does not allow EIP unbinding.	EIP cannot be unbound.	Check whether the EIP status allows an unbinding operation.
400	DBS.200702	The node has been bound to a public IP address and cannot be bound again.	Node has already an EIP bound and cannot be bound with another EIP.	Check whether an EIP has been bound to the node.
400	DBS.200705	The PublicIp does not exist.	Target EIP not found.	Check whether the EIP exists and whether the EIP and its ID match.
400	DBS.200816	Failed to create the database user.	Creating database user failed.	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.	Obtaining database users failed.	Check the database status and instance status.
400	DBS.200818	Failed to delete the database user.	Deleting database user failed.	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 user name is valid.
400	DBS.200826	The database name already exists.	Database name already exists.	Check whether the database name is valid.
400	DBS.200827	The database user already exists.	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 database account and cannot be operated by users.	Check whether the database user is valid.
500	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 performed in current state of the 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 transferred parameters or URLs are correct.
403	DBS.201014	Operation cannot be executed in current state of the DB instance.	Operation cannot be performed in current state of the 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.	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 API.	Check whether the DB engine is supported.
403	DBS.201028	The DB instance does not exist.	Instance not found.	Check whether the instance belongs to the tenant and whether the instance exists.
400	DBS.201035	The database name must be different.	Database name already exists.	Check whether the same database name exists.
400	DBS.201038	The collection name must be different.	Collection name already exists.	Check whether the same collection name exists.
400	DBS.201101	Invalid backup period.	Invalid backup cycle.	Check whether the backup cycle meets the requirements.
400	DBS.201106	Invalid retention period.	Invalid retention period.	Check whether the backup retention period is correct.
400	DBS.201201	The backup already exists.	Backup file already exists.	Check whether the backup name or ID already exists.
400	DBS.201202	Operation cannot be executed in current state of the DB instance.	Operation cannot be performed in current state of the 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.	Backup file not found.	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 file 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 instance belongs to the tenant, whether the instance name or ID is correct, and whether the instance exists.
400	DBS.201502	The DB instance does not exist.	Instance not found.	Check whether the instance belongs to the tenant, whether the instance name or ID is correct, and whether the instance exists.
400	DBS.280308	The AZ is inconsistent.	Inconsistent AZs.	Check whether the instance is in the same AZ as dedicated resources.
400	DBS.212001	The parameter group {0} does not exist.	Parameter template not found.	Check whether the parameter template exists.
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.	Node associated with the parameter template is abnormal.	Check whether the node associated with the parameter template is normal.
400	DBS.212008	The database type does not exist.	Unsupported database version.	Check whether the database version supports this operation.
400	DBS.212013	The parameter group does not exist.	Parameter template not found.	Check whether the parameter template exists or belongs to the current tenant.
400	DBS.212017	The parameter is invalid.	Invalid parameter.	Check whether transferred parameters or URLs are correct and meet the requirements.
400	DBS.212019	Invalid parameter.	Invalid parameter.	Check whether 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.	Parameter template name already exists.	Check whether the parameter template name exists.
400	DBS.212031	Invalid parameter group name.	Invalid parameter template name.	Check whether the parameter template name is valid.
400	DBS.212032	The operation cannot be performed because this parameter group is being applied to one or more DB instance nodes.	Operation is not allowed because the parameter template is applied to one or more instance nodes.	Check whether the parameter template has been applied to the instance.
400	DBS.212035	Failed to associate this parameter group with the DB instance because the DB instance is currently being operated.	Operation cannot be performed in current state of the instance.	Check whether the instance is ongoing other operations.
400	DBS.212037	Parameters are incorrectly set.	Parameter error.	Check whether the parameter value is valid or within the valid range.
400	DBS.216016	DB instance does not exist.	Instance not found.	Check whether the instance exists.
400	DBS.216029	This operation is not allowed.	Operation not allowed.	Check whether the operation is valid or whether the current engine supports the operation.
400	DBS.216030	The queried node does not belong to the current instance.	Queried node does not belong to the current instance.	Check whether the input node belongs to the current instance.
400	DBS.216044	Invalid vpc cidr.	Invalid VPC CIDR block.	Check whether the format of the input VPC CIDR block is valid. Check whether the DR instance has overlapping VPC CIDR blocks in DR scenarios.
400	DBS.216045	Invalid db engine version.	Invalid DB API version.	Check whether the DB engine version is available or whether the version supports the current operation.
400	DBS.216046	Invalid subnet cidr.	Invalid subnet CIDR block.	Check whether the format of the input VPC CIDR block is valid.
400	DBS.238007	This operation cannot be performed in the current IP address status.	Operation cannot be performed in the current IP address state.	Check whether the delivered IP address is in use.
400	DBS.239010	Reduce num or target invalid.	Invalid quantity of nodes to be deleted or invalid nodes.	Check whether the input node belongs to the current instance.
400	DBS.239011	Reduce num invalid.	Invalid number of nodes to be deleted.	Check whether the number of input nodes is valid.
400	DBS.239012	Reduce target invalid.	Invalid node to be deleted.	Check whether the input node belongs to the current instance.
400	DBS.239013	resize flavor invalid.	Inappropriate specifications.	Check whether the input specifications are valid.
400	DBS.239014	Current disk capacity does not support scaling in the number of nodes.	Current storage space does not allow deleting nodes.	Check the storage space of the instance.
400	DBS.240001	node num inconsistent.	Inconsistent nodes.	Check whether the number of nodes is consistent.
400	DBS.240002	node num incorrect.	Invalid quantity of nodes.	Check whether the number of nodes is valid.
400	DBS.240003	Invalid billing mode.	Invalid billing mode.	Check whether the billing mode is valid.
400	DBS.240004	Invalid subscription type.	Invalid subscription type.	Check whether the subscription type is valid.
400	DBS.240005	Invalid validity period.	Invalid required duration.	Check whether the required duration is valid.
400	DBS.240006	Invalid renewal mode.	Invalid renewal mode.	Check whether the renewal mode is valid.
400	DBS.240007	Invalid payment mode.	Invalid payment mode.	Check whether the payment mode is valid.
400	DBS.240008	Submit order failed.	Order submission failed.	Contact customer service.
400	DBS.240009	Deleting nodes cannot be executed in current state of the DB instance.	Deleting nodes is not allowed in current state of the instance.	Check whether the current instance has nodes that can be deleted.
400	DBS.240010	The selected nodes do not support shrinkage.	Selected nodes cannot be deleted.	Check whether the selected nodes can be deleted.
400	DBS.240011	{0}	Order submission failed.	Check whether an error message is returned.
400	DBS.240012	The maximum number of resources that can be changed has been reached.	The maximum number of resources that can be changed has been reached.	Check whether the number of nodes in the current instance exceeds the upper limit.
400	DBS.240013	The current disk capacity cannot be changed to the target flavor.	Specifications cannot be changed because the storage space is too small.	Check whether the storage space of the current instance exceeds the upper limit defined by the target instance specifications.
400	DBS.280001	Parameter error.	Parameter error.	Check whether transferred parameters or URLs are correct and meet the requirements.
500	DBS.280005	Server error. Try again later.	Server error. Try again later.	Contact technical support.
400	DBS.280015	Permission denied.	Insufficient permissions.	Check whether the token expires and whether the instance matches the tenant.
400	DBS.280016	Resource not found.	Resource not found.	Check whether transferred parameters are correct and whether the instance exists.
403	DBS.280019	Account suspended.	Account in arrears.	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.
400	DBS.280042	Invalid request.	Invalid request.	Check whether the current instance status and the ongoing operation allow this operation or whether the request is valid.
400	DBS.280040	Parameter is null.	Parameter missed.	Check whether there are parameters not input.
404	DBS.280045	This parameter group does not exist.	Parameter template not found.	Check whether the parameter template exists in the request.
403	DBS.280056	Token invalid.	Invalid token.	Check whether the instance belongs to the tenant and whether the token has been obtained again.
400	DBS.280063	You do not have following permission to perform this operation: {0}. Contact the administrator to obtain permission.	Current user does not have the permission to perform xxx operation. Contact the account administrator.	Check whether the user group to which the current user belongs has the corresponding operation permission.
500	DBS.280064	Check PDP permissions failed.	Fine-grained authentication failed.	Contact 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 instance belongs to the tenant, whether the instance name or ID is correct, and whether the instance exists.
400	DBS.280122	Invalid DB engine.	Invalid storage API.	Check whether the storage engine matches the instance engine.
400	DBS.280123	Invalid node number.	Invalid node quantity.	Check whether the number of nodes meets the requirements.
400	DBS.280124	Invalid backup.	Invalid backup ID.	Check whether the backup ID is correct and meets the requirements.
400	DBS.280125	Invalid backup policy.	Invalid automated backup policy.	Check whether the automated backup policy 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.	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 cycle.	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 rational.
400	DBS.280234	Invalid DB instance name.	Invalid instance name.	Check whether the instance name is correct and whether the instance exists.
400	DBS.280235	Invalid database type.	Invalid DB API.	Check whether the DB engine name is correct.
400	DBS.280236	Invalid database version.	Invalid database version.	Check whether the database version is supported.
400	DBS.280239	Invalid specifications.	Invalid specifications.	Check whether specification code is correct and whether the specifications are available in the AZ.
400	DBS.280240	The specification does not exist.	Specification code not found.	Check whether the specification code is correct and the specifications are available.
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.	Storage space is out of range.	Check whether the storage space is correct.
400	DBS.280244	Invalid AZ.	Invalid AZ.	Check whether 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.280251	Invalid backup period.	Invalid backup cycle.	Check whether the backup cycle meets the requirements.
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 specifications match the instance.
400	DBS.280269	Invalid Datastore Info.	Invalid database information.	Check whether datastore information is correct and meets the requirements.
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 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.
400	DBS.280341	Invalid DB instance type.	Invalid instance type.	Check whether the GeminiDB APIs support the instance.
400	DBS.280342	Invalid DB instance mode.	Invalid instance type.	Check whether the instance type is correct and matches the instance ID.
400	DBS.280347	Unsupported database type.	Unsupported instance type.	Check whether the instance type 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.280391	Action check states.	Invalid action.	Check whether the input action meets the requirements.
400	DBS.280404	Invalid DB instance ID.	Invalid instance ID.	Check whether the instance ID is correct and meets the requirements.
403	DBS.280406	The DB instance cannot be deleted.	Instance cannot be deleted.	Check whether the DB API and billing mode support deletion of instances.
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.	Invalid project ID.	Check whether the project ID is correct and meets requirements.
400	DBS.280414	Invalid group type.	Invalid group type.	Check whether the instance group type is correct and meets the requirements and whether it matches the instance and group ID.
400	DBS.280416	Invalid backup end time.	Invalid backup end time.	Check whether the backup end time is missing and whether the backup end time period and format meet the requirements.
400	DBS.280421	Invalid EIP.	Invalid EIP.	Check whether the EIP exists and meets the requirements.
403	DBS.280433	Invalid enterprise project ID.	Invalid enterprise project ID.	Check whether the enterprise project ID meets the requirements.
400	DBS.280434	The specifications are unavailable.	Invalid resource specification code.	Check whether the resource specification code exists and meets the requirements.
400	DBS.280437	Not support enterprise project.	Enterprise project not supported.	The current user has not enabled the enterprise project service. Enable it or do not transfer related parameters.
400	DBS.280438	Invalid encryption key.	Invalid storage encryption key ID.	Check whether there is a disk encryption key ID available in the request and whether the current DB API 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.	Maximum connections reached.	Too frequent API requests. Try again later.
400	DBS.280444	Invalid value.	Invalid tag value.	Check whether the tag value is valid.
400	DBS.280445	The DB instance class is not available.	Unavailable instance specifications.	The current instance specifications are unavailable. Select another one.
400	DBS.280446	The database information does not exist.	Database information not found.	Check whether the datastore parameter exists.
400	DBS.280453	Invalid DSS storage pool ID.	Invalid DSS storage pool ID.	Check whether the storage pool ID is correct.
400	DBS.280465	Invalid password.	Invalid user password.	Check whether the user password meets the requirements.
400	DBS.280469	Invalid ECS group policy.	Invalid policy associated with the ECS group.	Check whether the policy associated with the ECS group is correct.
400	DBS.280480	The target specification is same as current.	Target specifications are the same as current specifications.	Check whether the target specifications are the same as the current specifications.
400	DBS.280456	This operation is not supported by the current billing mode.	Current billing mode does not support this operation.	Check whether the billing mode of the current instance meets the API requirements.
400	DBS.290000	Parameter error.	Parameter error.	Check whether 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.301040	The target security group is same as current.	Target security group is the same as current security group.	Check whether the target security group is the same as the current security group.
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.	Querying session failed.	Contact customer service to check the instance status.
400	DBS.301077	Kill session failed.	Killing session failed.	Contact customer service to check the instance status.
400	DBS.03000001	The instance has not build biactive relationship.	Instance has no dual-active DR relationships.	Check whether the instance has a dual-active DR relationship.
400	DBS.03000002	Invalid threshold.	Incorrect input threshold.	Check whether the input threshold meets the requirements.
400	DBS.03000003	Invalid step.	Inputting autoscaling increment failed.	Check whether the input increase step meets the requirements.
400	DBS.03000004	Invalid switch option.	Invalid parameter settings.	Check whether the input switch option is on or off.