Error · IFC Schema
How to fix Missing project
in IFC files
Every IFC must contain exactly one IfcProject. A missing project means a broken export — re-export the full model.
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What it means
The Missing project check
File contains no IfcProject entity
The fix
How to fix Missing project 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 | Revit always writes an IfcProject. A missing one indicates a corrupt or partial export — re-export the full model rather than an isolated selection. |
| ArchiCAD | Re-export the project; export the model, not an isolated element set that drops the project root. |
| Tekla | Re-export the full model so the IfcProject root is written. |
| Allplan | Re-export from the project so the IfcProject entity is included. |
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 "Missing project" check (RULE_MISSING_PROJECT) flags every affected element and pinpoints it in the model tree.
03
Fix in Revit
Revit always writes an IfcProject. A missing one indicates a corrupt or partial export — re-export the full model rather than an isolated selection.
04
Fix in ArchiCAD
Re-export the project; export the model, not an isolated element set that drops the project root.
05
Fix in Tekla
Re-export the full model so the IfcProject root is written.
06
Fix in Allplan
Re-export from the project so the IfcProject entity is included.
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 IFC Schema checks →
Check your whole model, not just one rule.
Missing project is 1 of 38 checks. Run the full IFC Health Score to see every issue and a single 0–100 number — free, no account, no upload.
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