1# Proxy Channel Management 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## 32390001 Bluetooth Disabled 8 9**Error Message** 10 11BR is disabled. 12 13**Description** 14 15This error code is reported if Bluetooth is disabled on the local device. 16 17**Possible Causes** 18 19Bluetooth is disabled on the local device. 20 21**Solution** 22 23Enable Bluetooth on the local device and try again. 24 25## 32390002 Bluetooth Unpaired 26 27**Error Message** 28 29Device not paired. 30 31**Description** 32 33This error code is reported if the local device has not established a Bluetooth pairing. 34 35**Possible Causes** 36 371. The local device has not established a Bluetooth pairing with the target device. 382. The Bluetooth service on the peer device has not enabled listening for pairing requests. 393. An invalid MAC address or UUID is used. 40 41**Solution** 42 431. Use the Health & Fitness app to add the device and pair it via Bluetooth. 442. Check whether the Bluetooth service on the peer device has enabled listening for pairing requests. 453. Check whether the input MAC address and UUID are valid. 46 47## 32390004 Invalid or Unavailable Channel ID 48 49**Error Message** 50 51ChannelId is invalid or unavailable. 52 53**Description** 54 55This error code is reported if the channel ID is invalid or unavailable. 56 57**Possible Causes** 58 591. The input **channelId** is invalid, that is, it is not the one returned by **openProxyChannel**. 602. The related channel has been closed. 61 62**Solution** 63 641. Review the code logic to determine if **channelId** is the one returned by **openProxyChannel**. 652. Review the code logic to determine if **channelId** is still used after the channel is closed. 66 67## 32390006 Parameter Verification Error 68 69**Error Message** 70 71Parameter error. 72 73**Description** 74 75This error code is reported if the parameter verification fails. 76 77**Possible Causes** 78 791. The format of the input MAC address or service UUID is incorrect. 802. The type of the input parameters is incorrect. 81 82**Solution** 83 84Review the code logic to determine if the MAC address and service UUID are in correct format and the type of the input parameters is correct. 85 86## 32390100 Internal Error 87 88**Error Message** 89 90Internal error. 91 92**Description** 93 94This error code is reported if an internal error occurs. 95 96**Possible Causes** 97 98System errors, such as null pointer, insufficient memory, unexpected distributed service restart, IPC exception, and JS engine exception. 99 100**Solution** 101 102Try again. If the fault persists, restart the application, update the application, or update the device version. 103 104## 32390101 Call Restricted 105 106**Error Message** 107 108Call is restricted. 109 110**Description** 111 112This error code is reported if an API call is restricted. 113 114**Possible Causes** 115 116The callers is not authorized to perform the operation. 117 118**Solution** 119 120Apply for the required permissions. 121 122## 32390102 Operation Failed or Connection Timed Out 123 124**Error Message** 125 126Operation failed or Connection timed out. 127 128**Description** 129 130This error code is reported if the operation fails or the connection times out. 131 132**Possible Causes** 133 134The underlying Bluetooth is faulty, leading to a connection failure or timeout. 135 136**Solution** 137 1381. Enable and disable Bluetooth on the local device and the target device. 1392. Restart the local device and the target device, and then enable Bluetooth on the devices. 140 141## 32390103 Data Too Long 142 143**Error Message** 144 145Data too long. 146 147**Description** 148 149This error code is reported if the data to be sent exceeds the length limit. 150 151**Possible Causes** 152 153The length of the data to be sent exceeds 4096 bytes. 154 155**Solution** 156 157Check the length of the data to be sent. 158 159## 32390104 Data Sending Failed 160 161**Error Message** 162 163Send failed. 164 165**Description** 166 167This error code is reported if data fails to be sent via Bluetooth. 168 169**Possible Causes** 170 171The underlying Bluetooth is faulty. 172 173**Solution** 174 1751. Restart Bluetooth on the local device and the target device. 1762. Restart the local device and the target device. 177