Warning · Data quality
How to fix Empty long name
in IFC files
Set the LongName on spaces, storeys and the building — it carries the human-readable room/level name used in schedules and COBie.
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What it means
The Empty long name check
IfcSpace/Storey/Building with no LongName
The fix
How to fix Empty long name in your authoring tool
Concrete, tool-specific steps. The check itself is schema-agnostic and works for IFC2x3, IFC4, IFC4x1 and IFC4x3.
| Authoring tool | How to fix |
|---|---|
| Revit | For spaces, set the Room/Area Name (Revit maps Room Name → IfcLongName and Room Number → IfcName). For storeys, give each Level a descriptive Name. For the building, set the name in the IFC export options. |
| ArchiCAD | Set the Zone Name for spaces (maps to IfcLongName) and name storeys via Design ▸ Story Settings. Set the building long name in File ▸ Info ▸ Project Info / the IFC Translator. |
| Tekla | Spaces and storeys are seldom authored in Tekla; where present, set the Name/UDA mapped to IfcLongName, or set storey names in the IFC export spatial settings. |
| Allplan | Set the room name (maps to IfcLongName), name storeys in the building structure, and set the building long name in the IFC export. |
How it works
Find and fix it in the browser
The whole flow runs client-side — your IFC file never leaves your machine.
01
Open your IFC file
Open IFC Viewer Online and drag & drop your IFC file. It is parsed locally in your browser via WebAssembly — nothing is uploaded.
02
Run the Health Score validation
Run validation. The "Empty long name" check (RULE_EMPTY_LONGNAME) flags every affected element and pinpoints it in the model tree.
03
Fix in Revit
For spaces, set the Room/Area Name (Revit maps Room Name → IfcLongName and Room Number → IfcName). For storeys, give each Level a descriptive Name.…
04
Fix in ArchiCAD
Set the Zone Name for spaces (maps to IfcLongName) and name storeys via Design ▸ Story Settings. Set the building long name in File ▸ Info ▸ Project…
05
Fix in Tekla
Spaces and storeys are seldom authored in Tekla; where present, set the Name/UDA mapped to IfcLongName, or set storey names in the IFC export…
06
Fix in Allplan
Set the room name (maps to IfcLongName), name storeys in the building structure, and set the building long name in the IFC export.
07
Re-validate
Re-export from your authoring tool and re-run validation to confirm the issue is resolved and your Health Score improved.
Related checks
Other Data quality checks →
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