1# Global Shortcut Key Error Codes 2 3> **NOTE** 4> 5> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](../errorcode-universal.md). 6 7## 4200002 Shortcut Key Already Registered by a System Application 8 9**Error Message** 10 11The hotkey has been used by the system. 12 13**Description** 14 15This error code is reported if the shortcut key has been registered by a system application. 16 17**Possible Cause** 18 191. The shortcut key has been registered by a system application. 20 21**Solution** 22 231. You can call [getAllSystemHotkeys](js-apis-inputconsumer.md#inputconsumergetallsystemhotkeys) to query all system shortcut keys. 24 25## 4200003 Shortcut Key Already Registered by a Third-party Application 26 27**Error Message** 28 29The hotkey has been subscribed to by another. 30 31**Description** 32 33This error code is generated when the shortcut key is registered by a third-party application. 34 35**Possible Cause** 36 371. The shortcut key has been registered by a third-party application. 38 39**Solution** 40 411. In the cmd window, run **hidumper -s 3101 -a -s** to query all registered shortcut keys and use any available shortcut keys. 42