# InvalidLayerOrdinal

> Indicates an invalid layer ordinal. This is typically used when retrieving a layer ordinal but a name could not be found.

## Definition

* **Type:** Field
* **Namespace:** [Unity.U2D.Physics](/engine/6000.7/script-reference/unity/u2d/physics.md)
* **Assembly:** UnityEngine.PhysicsCore2DModule

```csharp
public const int InvalidLayerOrdinal = -1
```