# ChangeChildrenOrder

> A change of this type indicates that a child has been reordered in the hierarchy under the same parent. This happens when Undo.RegisterChildrenOrderUndo is called or when reordering a child in the hierarchy under the same parent.

## Definition

* **Type:** Field
* **Namespace:** [UnityEditor](/engine/6000.7/script-reference/unityeditor.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
ChangeChildrenOrder = 12
```