API Reference > presentation-common > PresentationRules > PropertyCategorySpecification > parentId parentId parentId: string | NoCategoryIdentifier | CategoryIdentifier Identifier of a parent category. When specified as a string, the value acts as an IdCategoryIdentifier. Defaults to ParentCategoryIdentifier. Defined in presentation/common/src/presentation-common/rules/content/modifiers/PropertyCategorySpecification.ts Line 86 Last Updated: 29 November, 2022