API Reference > presentation-common > PresentationRules > ChildNodeSpecificationBase > suppressSimilarAncestorsCheck suppressSimilarAncestorsCheck Beta suppressSimilarAncestorsCheck: undefined | boolean Suppress similar ancestor nodes' checking when creating nodes based on this specification. By default we stop creating hierarchy at the node that has a similar ancestor representing the same ECInstance and created using the same specification to prevent creating infinite hierarchies. With this flag enabled, we allow up to 10 similar ancestors before we consider the hierarchy infinite. Defined in presentation/common/src/presentation-common/rules/hierarchy/ChildNodeSpecification.ts Line 96 Last Updated: 11 June, 2024