# InvalidMeshId

> The mesh generation failed because the mesh does not exist.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.XR](/engine/6000.3/script-reference/unityengine/xr.md)
* **Assembly:** UnityEngine.XRModule

```csharp
InvalidMeshId = 1
```

### Remarks

The tracked mesh with the provided [MeshId](/engine/6000.3/script-reference/unityengine/xr/meshid.md) is no longer tracked.

Additional Resources: [XRMeshSubsystem.GenerateMeshAsync](/engine/6000.3/script-reference/unityengine/xr/xrmeshsubsystem/generatemeshasync.md), [MeshGenerationResult](/engine/6000.3/script-reference/unityengine/xr/meshgenerationresult.md)