1e41f4b71Sopenharmony_ci# UiTest 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## 17000001 Initialization Failure 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci**Error Message** 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ciInitialization failed. 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci**Description** 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ciThis error code is reported when the framework fails to be initialized. 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci**Possible Causes** 18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ciThe accessibility service cannot be accessed. 20e41f4b71Sopenharmony_ci 21e41f4b71Sopenharmony_ci**Solution** 22e41f4b71Sopenharmony_ci 23e41f4b71Sopenharmony_ciRun the **param set persist.ace.testmode.enabled 1** command and restart the device. 24e41f4b71Sopenharmony_ci 25e41f4b71Sopenharmony_ci## 17000002 Unable to Call the API 26e41f4b71Sopenharmony_ci**Error Message** 27e41f4b71Sopenharmony_ci 28e41f4b71Sopenharmony_ciThe async function is not called with await. 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci**Description** 31e41f4b71Sopenharmony_ci 32e41f4b71Sopenharmony_ciThe API is not called asynchronously. 33e41f4b71Sopenharmony_ci 34e41f4b71Sopenharmony_ci**Possible Causes** 35e41f4b71Sopenharmony_ci 36e41f4b71Sopenharmony_ciThe API was not called using **await**. 37e41f4b71Sopenharmony_ci 38e41f4b71Sopenharmony_ci**Solution** 39e41f4b71Sopenharmony_ci 40e41f4b71Sopenharmony_ciCheck test cases and make sure asynchronous APIs are called using **await**. 41e41f4b71Sopenharmony_ci 42e41f4b71Sopenharmony_ci## 17000003 Assertion Failure 43e41f4b71Sopenharmony_ci**Error Message** 44e41f4b71Sopenharmony_ci 45e41f4b71Sopenharmony_ciAssertion failed. 46e41f4b71Sopenharmony_ci 47e41f4b71Sopenharmony_ci**Description** 48e41f4b71Sopenharmony_ci 49e41f4b71Sopenharmony_ciThis error code is reported when the user assertion fails. 50e41f4b71Sopenharmony_ci 51e41f4b71Sopenharmony_ci**Possible Causes** 52e41f4b71Sopenharmony_ci 53e41f4b71Sopenharmony_ciThe component that the user asserts to exist does not exist. 54e41f4b71Sopenharmony_ci 55e41f4b71Sopenharmony_ci**Solution** 56e41f4b71Sopenharmony_ci 57e41f4b71Sopenharmony_ciCheck the existence of the component that is asserted to exist. 58e41f4b71Sopenharmony_ci 59e41f4b71Sopenharmony_ci## 17000004 Target Component/Window Lost 60e41f4b71Sopenharmony_ci**Error Message** 61e41f4b71Sopenharmony_ci 62e41f4b71Sopenharmony_ciThe window or component is invisible or destroyed. 63e41f4b71Sopenharmony_ci 64e41f4b71Sopenharmony_ci**Description** 65e41f4b71Sopenharmony_ci 66e41f4b71Sopenharmony_ciThis error code is reported when the target component or window is lost and cannot be operated. 67e41f4b71Sopenharmony_ci 68e41f4b71Sopenharmony_ci**Possible Causes** 69e41f4b71Sopenharmony_ci 70e41f4b71Sopenharmony_ciAfter the target component or window is obtained, the page changes. As a result, the target component or window is lost. 71e41f4b71Sopenharmony_ci 72e41f4b71Sopenharmony_ci**Solution** 73e41f4b71Sopenharmony_ci 74e41f4b71Sopenharmony_ciCheck whether the loss is caused by page changes. 75e41f4b71Sopenharmony_ci 76e41f4b71Sopenharmony_ci## 17000005 Operation Not Supported 77e41f4b71Sopenharmony_ci**Error Message** 78e41f4b71Sopenharmony_ci 79e41f4b71Sopenharmony_ciThis operation is not supported. 80e41f4b71Sopenharmony_ci 81e41f4b71Sopenharmony_ci**Description** 82e41f4b71Sopenharmony_ci 83e41f4b71Sopenharmony_ciThis error code is reported when the performed operation is not supported by the UI object. 84e41f4b71Sopenharmony_ci 85e41f4b71Sopenharmony_ci**Possible Causes** 86e41f4b71Sopenharmony_ci 87e41f4b71Sopenharmony_ciThe component or window attribute does not support the performed operation. 88e41f4b71Sopenharmony_ci 89e41f4b71Sopenharmony_ci**Solution** 90e41f4b71Sopenharmony_ci 91e41f4b71Sopenharmony_ciMake sure the operation to perform is supported by the component or window attribute. 92