---
title: KM02092: WARN_TouchLayoutCustomKeyNotDefined
---

|            |           |
|------------|---------- |
| Message    | Key "<param>" on platform "<param>", layer "<param>", is a custom key but has no corresponding rule in the source\. |
| Module     | [kmc-kmn.KmnCompilerMessages](kmc-kmn.kmncompilermessages) |
| Identifier | `WARN_TouchLayoutCustomKeyNotDefined` |