# CanAppendBuild

> Whether you can append an existing build using BuildOptions.AcceptExternalModificationsToPlayer.

## Definition

* **Type:** Enum
* **Namespace:** [UnityEditor](/engine/6000.6/script-reference/unityeditor.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public enum CanAppendBuild
```

## Fields

| Value                                                                                    | Description                                                                           |
| ---------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------- |
| [No](/engine/6000.6/script-reference/unityeditor/canappendbuild/no.md)                   | The target platform supports appending builds, and the build is not in a valid state. |
| [Unsupported](/engine/6000.6/script-reference/unityeditor/canappendbuild/unsupported.md) | The target platform does not support appending builds.                                |
| [Yes](/engine/6000.6/script-reference/unityeditor/canappendbuild/yes.md)                 | The target platform supports appending builds, and the build can be appended.         |