1# Ethernet Connection 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## 2200001 Invalid Parameter Value 8 9**Error Message** 10 11Invalid parameter value. 12 13**Description** 14 15This error code is reported if the parameter value is invalid. 16 17**Cause** 18 19The input parameter value is not within the valid value range. 20 21**Procedure** 22 23Check whether the input parameter value is within the valid value range. 24 25## 2200002 Service Connection Failure 26 27**Error Message** 28 29Operation failed. Cannot connect to service. 30 31**Description** 32 33This error code is reported if a service connection failure occurs. 34 35**Cause** 36 37The service is abnormal. 38 39**Procedure** 40 41Check whether system services are running properly. 42 43## 2200003 System Internal Error 44 45**Error Message** 46 47System internal error. 48 49**Description** 50 51This error code is reported if a system internal error occurs. 52 53**Cause** 54 551. The memory is abnormal. 56 572. A null pointer is present. 58 59**Procedure** 60 611. Check whether the memory space is sufficient. If not, clear the memory and try again. 62 632. Check whether the system is normal. If not, try again later or restart the device. 64 65## 2201005 Device Information Not Exist 66 67**Error Message** 68 69The device information does not exist. 70 71**Description** 72 73This error code is reported if the device information does not exist. 74 75**Cause** 76 77The device to set or obtain does not exist. 78 79**Procedure** 80 81 ```bash 82 > hdc shell ifconfig 83 ``` 84 Check whether the device, for example, **eth0** or **eth1**, exists. 85 86## 2201006 Device Not Connected 87 88**Error Message** 89 90Device disconnected. 91 92**Description** 93 94This error code is reported if the device is not connected. 95 96**Cause** 97 98The network interface card (NIC) is faulty. 99 100**Procedure** 101 102View the Ethernet service and netsys logs to check for the connection status information reported by the kernel. 103 104## 2201007 Failed to Write the User Configuration 105 106**Error Message** 107 108Failed to write the user configuration. 109 110**Description** 111 112This error code is reported if an error occurs while writing data to the user configuration file. 113 114**Cause** 115 116The system reports an error. 117 118**Procedure** 119 120A system internal error occurs. You are advised to locate the fault based on logs. 121