# Data Types The Amazon EMR API contains several data types that various actions use. This section describes each data type in detail. **Note** The order of each element in a data type structure is not guaranteed. Applications should not assume a particular order. The following data types are supported: + [Application](API_Application.md) + [AutoScalingPolicy](API_AutoScalingPolicy.md) + [AutoScalingPolicyDescription](API_AutoScalingPolicyDescription.md) + [AutoScalingPolicyStateChangeReason](API_AutoScalingPolicyStateChangeReason.md) + [AutoScalingPolicyStatus](API_AutoScalingPolicyStatus.md) + [AutoTerminationPolicy](API_AutoTerminationPolicy.md) + [BlockPublicAccessConfiguration](API_BlockPublicAccessConfiguration.md) + [BlockPublicAccessConfigurationMetadata](API_BlockPublicAccessConfigurationMetadata.md) + [BootstrapActionConfig](API_BootstrapActionConfig.md) + [BootstrapActionDetail](API_BootstrapActionDetail.md) + [CancelStepsInfo](API_CancelStepsInfo.md) + [CloudWatchAlarmDefinition](API_CloudWatchAlarmDefinition.md) + [CloudWatchLogConfiguration](API_CloudWatchLogConfiguration.md) + [Cluster](API_Cluster.md) + [ClusterStateChangeReason](API_ClusterStateChangeReason.md) + [ClusterStatus](API_ClusterStatus.md) + [ClusterSummary](API_ClusterSummary.md) + [ClusterTimeline](API_ClusterTimeline.md) + [Command](API_Command.md) + [ComputeLimits](API_ComputeLimits.md) + [Configuration](API_Configuration.md) + [Credentials](API_Credentials.md) + [EbsBlockDevice](API_EbsBlockDevice.md) + [EbsBlockDeviceConfig](API_EbsBlockDeviceConfig.md) + [EbsConfiguration](API_EbsConfiguration.md) + [EbsVolume](API_EbsVolume.md) + [Ec2InstanceAttributes](API_Ec2InstanceAttributes.md) + [EMRContainersConfig](API_EMRContainersConfig.md) + [ErrorDetail](API_ErrorDetail.md) + [ExecutionEngineConfig](API_ExecutionEngineConfig.md) + [FailureDetails](API_FailureDetails.md) + [HadoopJarStepConfig](API_HadoopJarStepConfig.md) + [HadoopStepConfig](API_HadoopStepConfig.md) + [Instance](API_Instance.md) + [InstanceFleet](API_InstanceFleet.md) + [InstanceFleetConfig](API_InstanceFleetConfig.md) + [InstanceFleetModifyConfig](API_InstanceFleetModifyConfig.md) + [InstanceFleetProvisioningSpecifications](API_InstanceFleetProvisioningSpecifications.md) + [InstanceFleetResizingSpecifications](API_InstanceFleetResizingSpecifications.md) + [InstanceFleetStateChangeReason](API_InstanceFleetStateChangeReason.md) + [InstanceFleetStatus](API_InstanceFleetStatus.md) + [InstanceFleetTimeline](API_InstanceFleetTimeline.md) + [InstanceGroup](API_InstanceGroup.md) + [InstanceGroupConfig](API_InstanceGroupConfig.md) + [InstanceGroupDetail](API_InstanceGroupDetail.md) + [InstanceGroupModifyConfig](API_InstanceGroupModifyConfig.md) + [InstanceGroupStateChangeReason](API_InstanceGroupStateChangeReason.md) + [InstanceGroupStatus](API_InstanceGroupStatus.md) + [InstanceGroupTimeline](API_InstanceGroupTimeline.md) + [InstanceResizePolicy](API_InstanceResizePolicy.md) + [InstanceStateChangeReason](API_InstanceStateChangeReason.md) + [InstanceStatus](API_InstanceStatus.md) + [InstanceTimeline](API_InstanceTimeline.md) + [InstanceTypeConfig](API_InstanceTypeConfig.md) + [InstanceTypeSpecification](API_InstanceTypeSpecification.md) + [JobFlowDetail](API_JobFlowDetail.md) + [JobFlowExecutionStatusDetail](API_JobFlowExecutionStatusDetail.md) + [JobFlowInstancesConfig](API_JobFlowInstancesConfig.md) + [JobFlowInstancesDetail](API_JobFlowInstancesDetail.md) + [KerberosAttributes](API_KerberosAttributes.md) + [KeyValue](API_KeyValue.md) + [ManagedScalingPolicy](API_ManagedScalingPolicy.md) + [MetricDimension](API_MetricDimension.md) + [MonitoringConfiguration](API_MonitoringConfiguration.md) + [NotebookExecution](API_NotebookExecution.md) + [NotebookExecutionSummary](API_NotebookExecutionSummary.md) + [NotebookS3LocationForOutput](API_NotebookS3LocationForOutput.md) + [NotebookS3LocationFromInput](API_NotebookS3LocationFromInput.md) + [OnDemandCapacityReservationOptions](API_OnDemandCapacityReservationOptions.md) + [OnDemandProvisioningSpecification](API_OnDemandProvisioningSpecification.md) + [OnDemandResizingSpecification](API_OnDemandResizingSpecification.md) + [OSRelease](API_OSRelease.md) + [OutputNotebookS3LocationForOutput](API_OutputNotebookS3LocationForOutput.md) + [OutputNotebookS3LocationFromInput](API_OutputNotebookS3LocationFromInput.md) + [PersistentAppUI](API_PersistentAppUI.md) + [PlacementGroupConfig](API_PlacementGroupConfig.md) + [PlacementType](API_PlacementType.md) + [PortRange](API_PortRange.md) + [ReleaseLabelFilter](API_ReleaseLabelFilter.md) + [S3LoggingConfiguration](API_S3LoggingConfiguration.md) + [S3MonitoringConfiguration](API_S3MonitoringConfiguration.md) + [ScalingAction](API_ScalingAction.md) + [ScalingConstraints](API_ScalingConstraints.md) + [ScalingRule](API_ScalingRule.md) + [ScalingTrigger](API_ScalingTrigger.md) + [ScriptBootstrapActionConfig](API_ScriptBootstrapActionConfig.md) + [SecurityConfigurationSummary](API_SecurityConfigurationSummary.md) + [SessionMappingDetail](API_SessionMappingDetail.md) + [SessionMappingSummary](API_SessionMappingSummary.md) + [ShrinkPolicy](API_ShrinkPolicy.md) + [SimpleScalingPolicyConfiguration](API_SimpleScalingPolicyConfiguration.md) + [SimplifiedApplication](API_SimplifiedApplication.md) + [SpotProvisioningSpecification](API_SpotProvisioningSpecification.md) + [SpotResizingSpecification](API_SpotResizingSpecification.md) + [Step](API_Step.md) + [StepConfig](API_StepConfig.md) + [StepDetail](API_StepDetail.md) + [StepExecutionStatusDetail](API_StepExecutionStatusDetail.md) + [StepMonitoringConfiguration](API_StepMonitoringConfiguration.md) + [StepStateChangeReason](API_StepStateChangeReason.md) + [StepStatus](API_StepStatus.md) + [StepSummary](API_StepSummary.md) + [StepTimeline](API_StepTimeline.md) + [Studio](API_Studio.md) + [StudioSummary](API_StudioSummary.md) + [SupportedInstanceType](API_SupportedInstanceType.md) + [SupportedProductConfig](API_SupportedProductConfig.md) + [Tag](API_Tag.md) + [UsernamePassword](API_UsernamePassword.md) + [VolumeSpecification](API_VolumeSpecification.md)