hierarchyId

The ID of the hierarchy by which child assets are associated to the asset. (This can be either the actual ID in UUID format, or else externalId: followed by the external ID, if it has one. For more information, see Referencing objects with external IDs in the IoT SiteWise User Guide.) To find a hierarchy ID, use the DescribeAsset or DescribeAssetModel operations. This parameter is required if you choose CHILD for traversalDirection.

For more information, see Asset hierarchies in the IoT SiteWise User Guide.