PR: IFC Export: ModelLabel and ModelReference under Pset_Pset_ManufacturerTypeInformation
- Dominant language
- C#
- Stars
- 637
- Forks
- 225
- PR merge metrics
- No merged PRs in 30d
Description
### Problem Description
I have three properties (ModelLabel, ModelReference and Manufacturer) under Pset_Pset_ManufacturerTypeInformation. When I export those properties using IFC4 schema, Revit creates 2 property sets with identical name (Pset_Pset_ManufacturerTypeInformation).
This is not allowed under the https://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcUniquePropertySetNames.htm
This causes issues when checking IFC using IDS.
[ModelLabel and ModelReference Revit.zip](https://github.com/user-attachments/files/22172455/ModelLabel.and.ModelReference.Revit.zip)
### Revit Version
2026.0.x
### IFC for Revit Addon Version
26.1.0
### Windows Version
11 24H2
Contributor guide
Research direction
Start with the attached ModelLabel and ModelReference Revit.zip and reproduce an IFC4 export using Revit 2026.0.x and IFC for Revit 26.1.0. Inspect the resulting property sets and validate them with IDS; done means the three properties no longer produce duplicate Pset_Pset_ManufacturerTypeInformation sets and the IFC satisfies the unique-property-set-names requirement.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- csharp
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100