# Data Types The Security Incident Response 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: + [CaseAttachmentAttributes](API_CaseAttachmentAttributes.md) + [CaseEditItem](API_CaseEditItem.md) + [CaseMetadataEntry](API_CaseMetadataEntry.md) + [GetMembershipAccountDetailError](API_GetMembershipAccountDetailError.md) + [GetMembershipAccountDetailItem](API_GetMembershipAccountDetailItem.md) + [ImpactedAwsRegion](API_ImpactedAwsRegion.md) + [IncidentResponder](API_IncidentResponder.md) + [InvestigationAction](API_InvestigationAction.md) + [InvestigationFeedback](API_InvestigationFeedback.md) + [ListCasesItem](API_ListCasesItem.md) + [ListCommentsItem](API_ListCommentsItem.md) + [ListMembershipItem](API_ListMembershipItem.md) + [MembershipAccountsConfigurations](API_MembershipAccountsConfigurations.md) + [MembershipAccountsConfigurationsUpdate](API_MembershipAccountsConfigurationsUpdate.md) + [OptInFeature](API_OptInFeature.md) + [ThreatActorIp](API_ThreatActorIp.md) + [ValidationExceptionField](API_ValidationExceptionField.md) + [Watcher](API_Watcher.md)