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Cloud Backup:Public error codes

Last Updated:Jul 15, 2026

Error codes

HTTP status code

Error code

Error message

Description

Action

404 AirBackupJobNotExists The air backup job does not exist. The ECS Backup Essential Edition backup job does not exist. diagnosis
404 AirBackupPlanNotExists The air backup plan does not exist. The ECS Backup Essential Edition backup plan does not exist. diagnosis
400 AirInstanceAtLeastOnePlan The air instance must have one plan. At least one backup type must be enabled for ECS Backup Essential Edition. diagnosis
400 AirInstanceError The air instance is error, does not support this operation. The ECS Backup Essential Edition is in an abnormal state and does not support this operation. Re-bindor unbind the ECS instance. diagnosis
400 AirInstanceExpired The air instance is expired, does not support this operation. The ECS Backup Essential Edition has expired and does not support this operation. diagnosis
400 AirInstanceInitializing The air instance is in INITIALIZING. The ECS Backup Essential Edition subscription instance is being initialized or unbound. This operation is not supported. diagnosis
404 AirInstanceNotExists The air Instance does not exist. The ECS Backup Essential Edition subscription instance does not exist. diagnosis
400 ArchiveDaysTooShort The snapshot should be in standard bucket for at least 30 days. Backups must be retained in the standard tier for at least 30 days before they can be moved to the archive tier. diagnosis
400 ArchiveRetentionDaysTooShort The archive snapshot should be in archive bucket for at least 60 days. Backups must be retained in the archive tier for at least 60 days. diagnosis
400 ArchiveSnapshotCannotDetect Archive snapshot cannot detect. This backup has been moved to the archive tier and does not support virus file detection. diagnosis
400 ArchiveSnapshotCannotGenerateReport The archived snapshot can not generate report. Archived backup points do not support report generation. diagnosis
400 BackupJobStillRunning Previous backup job has not complete yet, please wait until it complete. The previous backup job has not been completed. Wait until the backup job is completed. diagnosis
400 BrowseDuplicateLoad Backend job have already submitted. An identical task is already running in the background. diagnosis
500 BrowseFileError An error occurred while browsing the backup files; please submit a ticket. Failed to browse backup files. Submit a ticket. diagnosis
400 BrowseFileError Browse file error. Failed to browse files. diagnosis
400 BrowseTimeout Too many files in this folder, backend job have already launched. Please wait for a while and try again. The folder contains too many files. A background task has been submitted. Wait a moment and try again. diagnosis
400 CannotArchiveDetectingSnapshot Can not archive detecting snapshot. The backup is undergoing virus file detection and cannot be archived. Wait until the virus file detection is completed and try again. diagnosis
400 CannotDeleteActiveClient The active client can not deleted. An active client cannot be deleted. diagnosis
400 CannotDeleteArchivedSnapshot Can not delete archived snapshot. Backups that have been moved to the archive tier cannot be deleted before they expire. Wait until the backup expires and Cloud Backup automatically deletes it. diagnosis
400 CannotDeleteArchivingSnapshot Can not delete archiving snapshot. Backups that are being archived cannot be manually deleted. Wait until the backup expires and Cloud Backup automatically deletes it. diagnosis
400 CannotDeleteDetectingSnapshot Cannot delete detecting snapshot. This backup is undergoing virus file detection and cannot be deleted. Wait until the detection is completed and try again. diagnosis
400 CannotDeleteLatestOtsSnapshot Cannot delete latest snapshot. The backup plan has enabled Keep-Latest-Snapshot. If you want to delete this snapshot, please delete the backup plan first. The latest backup cannot be deleted because the "Retain the latest backup" setting is enabled for this backup plan. To delete this backup, delete the backup plan first. diagnosis
400 CannotDeleteLatestSnapshot Cannot delete latest snapshot. The backup plan has enabled Keep-Latest-Snapshot. If you want to delete this snapshot, please turn off Keep-Latest-Snapshot. The latest backup cannot be deleted because the "Retain at least one backup version" setting is enabled for this backup plan. To delete this backup, disable the "Retain at least one backup version" setting in the backup plan first. diagnosis
400 CannotDeletePlanWithRunningJobs Cannot delete plan with running jobs. A backup plan cannot be deleted while a job is running. diagnosis
400 CannotDeleteReplicationSourceVault Cannot delete replication source vault. The source backup vault for cross-region backup cannot be deleted. diagnosis
400 CannotInstallNewClientWithAegisClient Cannot install client on this ECS because an old version of aegis backup client already installed. The client cannot be installed on this ECS instance because a legacy version of the aegis backup client is already installed. diagnosis
403 CannotOperateClientInstalledByEcsOwner Can not operate client on this ECS because it was installed by ECS owner. You cannot operate on ECS clients that belong to other users. diagnosis
400 CannotOperateClientInstalledByOthers The client is installed by another service, can not be operated. You cannot operate on clients installed by other services. diagnosis
400 CannotTurnOffKeepLatestSnapshot Cannot turn off Keep latest snapshot, please set KeepLatestSnapshot to 1. The "Retain at least one backup version" setting cannot be disabled. Enable this feature. diagnosis
403 CannotUnInstallNewClientWithAegisClient The client is being used by the Anti-Ransomware feature of Security Center and cannot be deleted. This backup client is being used by the anti-ransomware feature of Security Center and cannot be deleted. diagnosis
400 CannotUpgradeClientWithRunningJobs Cannot upgrade the client when there is an ongoing job. Try again after the job is finished. The client cannot be upgraded because a job is running. Try again after the job is completed. diagnosis
400 Client.HanaInvalidCertOrNetworkFailure Connection to database failed, please ensure the server certificate is valid and network is reachable. The database connection failed. Make sure the HANA SSL certificate is valid and the client can Normal access HANA. diagnosis
400 Client.HanaSqlError Internal HANA SQL error. An error occurred when the client executed a HANA SQL statement. diagnosis
400 Client.HanaSqlError Hana reports error when execute SQL statements. An error occurred when HANA executed an SQL statement. diagnosis
400 ClientBindsToWormVaultCannotBeDeleted The client is bound to a backup vault that has enabled backup lock. You cannot delete the client. This client is bound to a backup vault with backup lock enabled and cannot be deleted. diagnosis
400 ClientBindsToWormVaultCannotBeDeleted Cannot delete client bond to WORM vault. Clients in a locked backup vault cannot be deleted. diagnosis
400 ClientResponseTimeout The client response timed out. The client response timed out. diagnosis
400 CloudAssistNotRunningOnInstance There is no cloud assistant running on the instance. Cloud Assistant is not running on the instance. diagnosis
400 ClusterNameDuplicate The cluster name already exists, please modify the cluster name and try again. The client group name already exists. Modify the client group name and try again. diagnosis
400 ClusterNotExist Cluster does not exist. The client group does not exist. diagnosis
404 CommodityCodeNotSupport The commodity code does not support. The commodity code is not supported. diagnosis
400 ContainerBackupJobStillRunning The previous backup task for this resource is still running. The previous backup job for this resource has not finished. diagnosis
404 ContainerClusterNotExists The container cluster does not exist. The container cluster does not exist. diagnosis
400 CrossAccountBackupSlrNotExist AliyunServiceRoleForHbrCrossAccountBackup does not exist, please create this role. The cross-account permission AliyunServiceRoleForHbrCrossAccountBackup does not exist. Create this permission role. diagnosis
200 CrossAccountBackupSlrNotExist AliyunServiceRoleForHbrCrossAccountBackup doesn't exist, please create this role. The AliyunServiceRoleForHbrCrossAccountBackup role does not exist. Create this service-linked role. diagnosis
403 CrossAccountItemNotExists The cross account item not exists. The cross-account information does not exist. diagnosis
400 DataSourceNotExists Data source not exist. The data source does not exist. diagnosis
400 DoNotHaveActivatedClient There is not any actived client. No activated client exists. diagnosis
400 EcsAlreadyHasClientInstalledByOthers The ECS already has a client which managed by another service. The ECS instance already has a disaster recovery client managed by another service. diagnosis
400 EncryptedDiskNotSupportCopy The instance contains encrypted disk not support replication in ecs server backup. Encrypted cloud disks do not support cross-region replication. diagnosis
400 ExceedMaxBytes The bytes done exceeds 500G. The source data volume exceeds the upper limit. diagnosis
400 FailedToActivateUniBackupInstance Failed to activate unibackup instance. Failed to activate the database backup instance. The activation data is invalid or unavailable. diagnosis
400 FailedToCreateUniBackupJob Failed to create unibackup job. Failed to create the database backup job. diagnosis
400 FailedToDeleteUniBackupJob Failed to delete unibackup job. Failed to delete the database backup job. diagnosis
400 FailedToDescribeFileSystems Failed to describe NAS file systems. Failed to query the NAS file system. diagnosis
400 FailedToGetOssBucket Failed to get oss bucket. Failed to retrieve the Object Storage Service (OSS) bucket. diagnosis
400 FailedToListUniBackupInstanceDetail Failed to list unibackup instance detail. Failed to list the database instance details. diagnosis
400 FailedToListUniBackupResources Failed to list unibackup resources. Failed to expand the database instance resources. diagnosis
400 FailedToUpdateUniBackupJob Failed to update unibackup job. Failed to update the database backup job. diagnosis
400 FileDetectionNotExits File detection not exists. The virus file detection record does not exist. Submit a ticket. diagnosis
400 HanaNodeNotExist There is no hana node. No valid HANA node was found. diagnosis
404 HanaNotExist The HANA cluster or instance does not exist. The HANA cluster or instance does not exist. diagnosis
400 HanaUsesWormVaultCannotBeDeleted Hana instances that use worm vault cannot be deleted. The HANA instance that uses a locked backup vault cannot be deleted. diagnosis
400 HanaUsesWormVaultCannotBeDeleted Cannot delete Hana instance in WORM vault. Deleting a HANA instance in a locked backup vault is not allowed. diagnosis
400 HbrRoleNotExist Aliyun HBR default role doesn't exist. The default Alibaba Cloud Cloud Backup role does not exist. diagnosis
403 ImmutableSnapshotCannotBeDeleted This ECS instance backup snapshot is immutable and cannot be deleted. The ECS full-server backup is an immutable backup and cannot be deleted. diagnosis
400 InDebt Use is in debt. The user account has an overdue payment. diagnosis
400 InDebtOverdue The user is overdue. The user account has an overdue payment that has exceeded the grace period. Top up your account before using the service. diagnosis
500 InitVaultError An error occurred while initializing the repository; please submit a ticket. Failed to initialize the vault. Submit a ticket. diagnosis
400 InitVaultError Initialize vault failed. Failed to initialize the backup vault. diagnosis
400 InstanceHasBeenProtectedByAir The instance has been protected by air instance. The ECS instance is already protected by another subscription ECS Backup Essential Edition instance. diagnosis
400 InstanceNotExists The instance does not exist. The instance does not exist. diagnosis
400 InstanceNotRunning The Ecs instance is not running. The ECS instance is not in the Running state. diagnosis
400 INSUFFICIENT_AVAILABLE_QUOTA Your account balance drops below 0. Top up your account balance before you can make a purchase. Your account balance is insufficient. Top up your account before making a purchase. diagnosis
400 InvalidBackupInterval invalid backup interval, please modify your parameter The backup interval parameter in the request is invalid. Modify the request parameters and try again. diagnosis
400 InvalidBackupRuleRetention The retention of BACKUP rules is invalid. If the policy has no TRANSITION rule, the retention of BACKUP rule must be -1 or 1 to 364635 days. The retention period of the BACKUP rule in the policy is invalid. If the policy does not contain a TRANSITION rule, the retention period of the BACKUP rule must be -1 or in the range of 1 to 364635 days. diagnosis
400 InvalidDestinationPath Invalid destination path. The destination path is invalid. diagnosis
400 InvalidPolicyPolicyNameDuplicate The policy name is duplicate. The policy name is duplicated. diagnosis
400 InvalidPolicyPolicyNameTooLong The policy name is too long. The length should be between 1 and 64 characters. The backup policy name is too long. The name must be 1 to 64 characters in length. diagnosis
400 InvalidPolicyType The policy type does not allow binding to this type of data source. Please change the policy and try again. This policy type does not support binding to this type of data source. Change the policy and try again. diagnosis
400 InvalidScheduleFormat invalid schedule format, please modify your parameter The backup policy parameter in the request is invalid. Modify the request parameters based on the API reference and try again. diagnosis
400 InvalidScheduleForOtsIncrementalBackup Invalid backup interval for Tablestore incremental backup, please modify the parameters. The backup time interval for Tablestore incremental backup is invalid. Modify the parameter. diagnosis
400 InvalidSourcePath Invalid source path. The source path is invalid. diagnosis
400 InvalidStatusToDetect The archiving snapshot can not do detect. The backup is being archived. Virus file detection cannot be performed. diagnosis
400 InvalidToken The token is invalid. The token is invalid. diagnosis
400 InventoryFilterPrefixNotEqualToBackupPrefix Inventory filter prefix does not equal to backup prefix The backup plan cannot be created. The filter prefix of the selected OSS inventory does not match the current source path. Modify the inventory settings or the source path. diagnosis
400 InventoryFilterPrefixNotEqualToBackupPrefix OSS inventory filter prefix doesn't equal to backup prefix. The prefix of the OSS inventory does not match the prefix of the backup job. diagnosis
400 JobCanceled The job has been canceled. The job has been canceled. diagnosis
400 LocalDiskNotSupported This instance has local disk(s) that is not supported by HBR ECS Server Backup Full-copy backup is not supported for instances that contain local disks. diagnosis
400 LocalDiskNotSupported Not support local disk yet. Local cloud disks are not supported. diagnosis
403 MagpieBridgeSlrNotExist AliyunServiceRoleForHbrMagpieBridge doesn't exist, please create this role. The service-linked role AliyunServiceRoleForHbrMagpieBridge does not exist. Create this role first. diagnosis
404 NasFileSystemNotExist The NAS file system does not exsit. The NAS file system does not exist. diagnosis
400 NasFileSystemTypeNotSupported The NAS file system type is not supported. This NAS file system type is not supported. diagnosis
400 NasServiceNotOpened Alibaba Cloud NAS has not been activated. Go to the Alibaba Cloud NAS console to activate the product. Apsara File Storage NAS is not activated, or you have an overdue payment. Go to the Apsara File Storage NAS console to activate the service or top up your account. diagnosis
400 NoCompleteBackupRule The policy is missing the backup rule for full backup. Add it and try again. The policy is missing a backup rule (RuleType=BACKUP) for full backup (BackupType=COMPLETE). Add the rule and try again. diagnosis
400 NoPermissionToCreateCrossAccountBackupSlr No permission to create AliyunServiceRoleForHbrCrossAccountBackup You do not have permissions to create the service-linked role AliyunServiceRoleForHbrCrossAccountBackup. diagnosis
403 NoPermissionToCreateMagpieBridgeSlr No permission to create AliyunServiceRoleForHbrMagpieBridge. You do not have permissions to create the service-linked role AliyunServiceRoleForHbrMagpieBridge. Check your permissions. diagnosis
404 NoSuchEcsInstance The ECS Instance does not exist. The ECS instance does not exist. diagnosis
403 NotExist_ResourceGroup The resource group does not exist. The resource group does not exist. diagnosis
404 OssBucketNotFound The OSS bucket is not found. The OSS bucket was not found. diagnosis
400 PlanNameDuplicate Plan with specified name already exists. The plan name already exists. diagnosis
400 PlanNotExist Plan doesn't exist. The plan does not exist. diagnosis
400 PolicyAlreadyBoundWithThisDataSource This datasource has already been bound with the policy, please use another one. The data source is already bound to this policy. Try binding a different policy. diagnosis
400 PolicyAlreadyExist The specified policy already exists. The backup policy already exists. Verify that the input parameters are correct. diagnosis
403 PolicyBindingCreatedByTagCannotDelete The policy binding is created by tag rule in the policy, can not be deleted. This data source binding was automatically generated by a tag rule in the backup policy and cannot be deleted. diagnosis
400 PolicyBindingExists This datasource has been bound to a policy (can not create backup plan or been bound to another policy). The data source is already bound to a policy. You cannot create a backup plan or bind another policy to it. diagnosis
404 PolicyBindingNotExist PolicyBinding doesn't exist. The policy binding does not exist. diagnosis
400 PolicyOnExecution The policy is on execution, please wait and retry. The policy is being executed. Try again later. diagnosis
404 ReplicationSourceVaultNotFound The replication source vault does not exist. The source backup vault does not exist. diagnosis
400 ReplicationVaultCannotBeWormIfSourceVaultNot The replication vault cannot be immutable if the source vault is not immutable. Backup locking is not configured for the source vault. You cannot configure backup locking for the mirror vault. diagnosis
400 ReplicationVaultEncryptionTypeNotMatch Replication vault encryption type not match source vault. The encryption method of the mirror vault does not match the source vault. Modify the encryption method of the mirror vault. diagnosis
400 ReportFileTaskAlreadyExist The task to generate the report file already exists. A task to generate the report file already exists. diagnosis
404 RoleNotExist The specified role doesn't exist. The cross-service authorization role required by Cloud Backup does not exist. Grant the required permissions to Cloud Backup. diagnosis
400 SameSourceAndDestinationDataSourceError The source and destination data source can not be same. The source and destination cannot be the same data source. diagnosis
400 SnapshotAlreadyArchived Can not archive archived snapshot. The backup has already been moved to the archive tier and cannot be archived again. diagnosis
400 SnapshotDetecting The snapshot or another snapshot in the same snapshot link is detecting. Virus file detection is in progress for this backup or another backup in the same snapshot chain. Virus file detection is temporarily unavailable for this backup. diagnosis
400 SnapshotExistsCanNotDeletePlan The backup plan or policy binding can not be deleted when snapshots exist. The backup plan still contains valid backups and cannot be deleted. Delete the backups first. If you want to stop the backup plan from running before deleting the backups, pause the backup plan. diagnosis
400 StandardPolicyMustSetVaultId The standard policy must set vault id in the rules. The standard backup policy is missing a backup vault ID. diagnosis
400 TagKeyCannotBeEmpty The tag key in the tag filters can not be empty. The key of the tag filter in the policy tag rule cannot be empty. diagnosis
400 UdmBackupPlanMayExceedEcsDiskSnapshotQuota This risky backup plan may cause too many recovery points to exist at the same time, exceeding the maximum number of snapshots (default 256) that can be created by a single disk, resulting in the failure of creating new snapshots. The backup policy of this plan may result in more than 256 restore points at the same time, which exceeds the maximum number of restore points that can be created for a single cloud disk. This causes new restore point creation to fail. diagnosis
400 UdmEcsInstanceWithSnapshotsCanNotBeDeleted The ecs instance with snapshots can not be unprotected, please delete snapshots first. The ECS instance has available backup points and cannot be unprotected. Delete the available backup points first. diagnosis
400 UdmEcsOnlyPolicyCanNotSetVaultId The ecs-instance-backup-only policy can not set vault id in the rules. ECS full-server policies do not support specifying a backup vault. diagnosis
400 VaultBoundPolicyCannotBeDeleted The vault has been bound to the policy, please go to the Policy Center, delete the policy and retry. The backup vault is associated with a policy. Go to the policy center to delete the associated policy and try again. diagnosis
404 VaultNotFound The vault is not found. The backup vault was not found. diagnosis
404 VaultReplicationNotExist Vault replication doesn't exist. The backup vault replication relationship does not exist. diagnosis
403 VaultWithFileDetectionRunningCannotBeDeleted The vault with file detection running cannot be deleted. The vault has valid backups undergoing virus file detection and cannot be deleted. Wait until the virus file detection is complete and try again. diagnosis
400 WormVaultCannotBeDeleted The vault has enabled backup lock and cannot be deleted. The backup vault has backup lock enabled and cannot be deleted. diagnosis
400 WormVaultRetentionCannotBeReduced The retention days of immutable vault cannot be reduced. The retention period of a locked backup vault cannot be shortened. diagnosis
400 WormVaultSnapshotsCannotBeDeleted You cannot delete snapshots in the backup locked vault. The snapshot is in a locked backup vault and cannot be deleted. diagnosis
400 WormVaultSupportedForStandardOnly You can only enable backup lock for standard backup vaults. Only genearl backup vaults support enabling backup lock. diagnosis
400 WormVaultSupportedForStandardOnly Only Standard type vault supports WORM. Only standard backup vaults support locking. diagnosis
400 CannotOperateNewClientWithBasic The client is used by the essential edition, please do not perform any operations on this client. The client is used by the Essential Edition. Do not perform any operations to avoid affecting Essential Edition features. diagnosis
400 CannotDeleteReplicationTargetVault Cannot delete replication target vault. A replication target vault that is being replicated cannot be disabled. diagnosis
400 ReplicationVaultCannotBeWormBeforeCreateReplication The replication vault cannot be immutable before create replication. A replication target vault that is not configured for backup vault replication cannot enable backup lock. diagnosis
400 CannotDeleteSharedResource Cannot delete shared resource. Resources that are being shared cannot be deleted. diagnosis
409 DuplicateRequest Duplicate request, another request is processing. Duplicate request. Another request is being processed. diagnosis
404 KmsKeyNotFound Kms key not found. The KMS key was not found. diagnosis
400 InvalidKmsKeyStatus The status of kms key is invalid. The KMS key status is invalid. diagnosis
400 BackupJobStillRunning Last Backup job with same backup plan ID is not finished yet. The previous backup job of the backup plan has not finished. A new job cannot be started. diagnosis
400 BASIC_INFO_UNCOMPLETED Your information is incomplete. Complete your information before the operation. Your basic user information is incomplete. Complete the basic user information. diagnosis
400 ORDER.OPEND The service is activated. The service is already activated. diagnosis
400 QUOTA_NOT_ENOUGH The quota is insufficient. You can contact your channel partner to request a quota increase. The account credit limit is insufficient. Contact your channel partner to increase the limit. diagnosis
400 PERMISSION_DENIED Permission denied: Unknown or unsupported caller type. Please ensure the request is made with a valid caller type (Partner, Customer, SubUser, or AssumedRoleUser). Unknown caller type. diagnosis
400 AccountNotEnableRdTrustedService You have not enabled HBR as a trust service of resource directory. The account has not enabled Cloud Backup as a trusted service in the resource directory. diagnosis
403 BackupAccountNotInSpecifiedRd The backup account is not in the specified resource directory. The account to be backed up is not in the specified resource directory. diagnosis
400 CannotAccessRdService Cannot access resource directory service. The resource directory service cannot be accessed. diagnosis
404 CrossAccountRoleNotExist Cross account role doesn't exist, please check this role. The cross-account role does not exist. Verify the role. diagnosis
400 VaultReplicationStopping Vault replication is stopping. The backup vault replication is being stopped. diagnosis
400 CrossAccountItemAlreadyExists The cross account item already exists. The cross-account configuration already exists. Do not create a duplicate. diagnosis
400 SnapshotHashRequired Snapshot hash is required. The backup hash value is missing. diagnosis
400 KmsServiceNotEnabled Kms service not enabled. Key Management Service is not activated. diagnosis
400 FeatureDeprecated The feature has been deprecated. The feature has been deprecated. diagnosis