1e41f4b71Sopenharmony_ci# WebSocket 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## 2302001 WebSocket URL Error 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci**Error Message** 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ciWebsocket url error. 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci**Description** 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ciThis error code is reported if the WebSocket URL is incorrect. 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci**Possible Causes** 18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ciThe WebSocket URL is incorrect. 20e41f4b71Sopenharmony_ci 21e41f4b71Sopenharmony_ci## 2302002 WebSocket Certificate Does Not Exist 22e41f4b71Sopenharmony_ci 23e41f4b71Sopenharmony_ci**Error Message** 24e41f4b71Sopenharmony_ci 25e41f4b71Sopenharmony_ciWebsocket certificate file does not exist. 26e41f4b71Sopenharmony_ci 27e41f4b71Sopenharmony_ci**Description** 28e41f4b71Sopenharmony_ci 29e41f4b71Sopenharmony_ciThe WebSocket certificate does not exist. 30e41f4b71Sopenharmony_ci 31e41f4b71Sopenharmony_ci**Possible Causes** 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ciThe certificate path is incorrect or no certificate is configured. 34e41f4b71Sopenharmony_ci 35e41f4b71Sopenharmony_ci## 2302003 WebSocket Connection Already Exists 36e41f4b71Sopenharmony_ci 37e41f4b71Sopenharmony_ci**Error Message** 38e41f4b71Sopenharmony_ci 39e41f4b71Sopenharmony_ciWebsocket connection already exists. 40e41f4b71Sopenharmony_ci 41e41f4b71Sopenharmony_ci**Description** 42e41f4b71Sopenharmony_ci 43e41f4b71Sopenharmony_ciThe WebSocket connection already exists. 44e41f4b71Sopenharmony_ci 45e41f4b71Sopenharmony_ci**Possible Causes** 46e41f4b71Sopenharmony_ci 47e41f4b71Sopenharmony_ciThe WebSocket connection has been established. 48e41f4b71Sopenharmony_ci 49e41f4b71Sopenharmony_ci## 2302998 Domain Access Denied 50e41f4b71Sopenharmony_ci 51e41f4b71Sopenharmony_ci**Error Message** 52e41f4b71Sopenharmony_ci 53e41f4b71Sopenharmony_ciIt is not allowed to access this domain. 54e41f4b71Sopenharmony_ci 55e41f4b71Sopenharmony_ci**Description** 56e41f4b71Sopenharmony_ci 57e41f4b71Sopenharmony_ciThis error code is reported if access to a certain domain is prohibited. 58e41f4b71Sopenharmony_ci 59e41f4b71Sopenharmony_ci**Possible Causes** 60e41f4b71Sopenharmony_ci 61e41f4b71Sopenharmony_ciAn incorrect server domain name is configured for the atomic service. 62e41f4b71Sopenharmony_ci 63e41f4b71Sopenharmony_ci**Solution** 64e41f4b71Sopenharmony_ci 65e41f4b71Sopenharmony_ciConfigure a correct server domain name for the atomic service. For details, see [Network Connection Management](https://developer.huawei.com/consumer/en/doc/atomic-guides-V5/atomic-net-connection-manager-V5). 66e41f4b71Sopenharmony_ci 67e41f4b71Sopenharmony_ci## 2302999 Unknown WebSocket Errors 68e41f4b71Sopenharmony_ci 69e41f4b71Sopenharmony_ci**Error Message** 70e41f4b71Sopenharmony_ci 71e41f4b71Sopenharmony_ciWebsocket other unknown error. 72e41f4b71Sopenharmony_ci 73e41f4b71Sopenharmony_ci**Description** 74e41f4b71Sopenharmony_ci 75e41f4b71Sopenharmony_ciThis error code is reported if other unknown WebSocket errors occur. 76e41f4b71Sopenharmony_ci 77e41f4b71Sopenharmony_ci**Possible Causes** 78e41f4b71Sopenharmony_ci 79e41f4b71Sopenharmony_ciOther system faults occur. 80e41f4b71Sopenharmony_ci 81e41f4b71Sopenharmony_ci**Solution** 82e41f4b71Sopenharmony_ci 83e41f4b71Sopenharmony_ciContact technical support.