# 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:** [UnityEngine.LowLevelPhysics2D](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d.md)
* **Assembly:** UnityEngine.Physics2DModule

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