# Detection of a quantity set in an IFC entity

**URL:** <https://forums.buildingsmart.org/t/detection-of-a-quantity-set-in-an-ifc-entity/5745>\
**Category:** IDS\
**Tags:** ifc2x3\
**Created:** [November 6, 2024, 12:34pm UTC](https://forums.buildingsmart.org/t/detection-of-a-quantity-set-in-an-ifc-entity/5745 "2024-11-06T12:34:38Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![aperezga](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.buildingsmart.org/aperezga/32/2346_2.png) [@aperezga](https://forums.buildingsmart.org/u/aperezga)\
**Post date:** [November 6, 2024, 12:34pm UTC](https://forums.buildingsmart.org/t/detection-of-a-quantity-set-in-an-ifc-entity/5745/1 "2024-11-06T12:34:38Z")

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Hello everyone,

I would like to know if there is a possibility to detect through IDS if an IFC entity of an IFC2x3 model has a set of quantities defined. I don’t know the name of the set or the quantities it contains, I just want to detect if there is a quantity set associated with an entity. I’ve tried using the PartOf facet, in order to find the relation of the entity (in my case, an IfcWall) with an IfcElementQuantity, but I get an error.