> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/android/get-started/faq/multidex.md).

# Multidex error for apps with over 64K methods

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When your app and the libraries it references exceed 65,536 methods, you might encounter a build error that indicates your app has reached the limit of the Android build architecture:

{% tabs %}
{% tab title="Groovy" %}
{% code lineNumbers="true" %}

```groovy
Error:The number of method references in a .dex file cannot exceed 64K.
Learn how to resolve this issue at https://developer.android.com/tools/building/multidex.html
Error:com.android.dex.DexIndexOverflowException: method ID not in [0, 0xffff]: 65536
```

{% endcode %}
{% endtab %}
{% endtabs %}

The number `65,536` represents the maximum number of methods that can be referenced in a single Dalvik Executable (DEX) bytecode file. To resolve this issue, you need to enable `multidex` for your app which allows your app to build and read multiple DEX files. For more information on how to enable multidex, see: [Building apps with over 64K methods](https://developer.android.com/studio/build/multidex.html#about)


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