# InvalidParameter

> A parameter didn't contain valid information, useful for carrying out the NavMesh query.

## Definition

* **Type:** Field
* **Namespace:** [Unity.AI.Navigation.LowLevel](/engine/6000.5/script-reference/unity/ai/navigation/lowlevel.md)
* **Assembly:** UnityEngine.AIModule

```csharp
InvalidParameter = 8
```

### Remarks

This is a detail flag that accompanies a main status. Use [NavWorld.IsValid](/engine/6000.5/script-reference/unity/ai/navigation/lowlevel/navworld/isvalid.md) to check a NavWorld, a [NavNode](/engine/6000.5/script-reference/unity/ai/navigation/lowlevel/navnode.md), or a [NavLocation](/engine/6000.5/script-reference/unity/ai/navigation/lowlevel/navlocation.md) before you pass it to an operation.