1e41f4b71Sopenharmony_ci# Screen Lock Management Error Codes 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci> **NOTE** 4e41f4b71Sopenharmony_ci> 5e41f4b71Sopenharmony_ci> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](../errorcode-universal.md). 6e41f4b71Sopenharmony_ci 7e41f4b71Sopenharmony_ci## 13200002 Screen Lock Management Service Is Abnormal 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci**Error Message** 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ciThe screenlock management service is abnormal. 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci**Description** 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ciThis error code is reported when the screen lock management service is not working correctly. 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci**Possible Causes** 18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci1. The service stops running due to unknown errors and is not automatically restored. 21e41f4b71Sopenharmony_ci2. The service is running but does not respond due to unknown errors. 22e41f4b71Sopenharmony_ci 23e41f4b71Sopenharmony_ci**Solution** 24e41f4b71Sopenharmony_ci 25e41f4b71Sopenharmony_ciRun the **ps -ef** command to check whether the service is running. 26e41f4b71Sopenharmony_ci 27e41f4b71Sopenharmony_ci1. If the service is not running, restart the system. 28e41f4b71Sopenharmony_ci2. If the service is running, close the service process and wait for automatic recovery. If the issue persists, perform step 1. 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci## 13200003 Invalid Use 31e41f4b71Sopenharmony_ci 32e41f4b71Sopenharmony_ci**Error Message** 33e41f4b71Sopenharmony_ci 34e41f4b71Sopenharmony_ciillegal use. 35e41f4b71Sopenharmony_ci 36e41f4b71Sopenharmony_ci**Description** 37e41f4b71Sopenharmony_ci 38e41f4b71Sopenharmony_ciThis error code is reported when the API is not called by the application in focus. 39e41f4b71Sopenharmony_ci 40e41f4b71Sopenharmony_ci**Possible Causes** 41e41f4b71Sopenharmony_ci 42e41f4b71Sopenharmony_ciThe **unlock()** API is called by an application not in focus. 43e41f4b71Sopenharmony_ci 44e41f4b71Sopenharmony_ci 45e41f4b71Sopenharmony_ci**Solution** 46e41f4b71Sopenharmony_ci 47e41f4b71Sopenharmony_ciCheck whether the application that calls **unlock()** is in focus. 48