# Proxy Channel Management Error Codes

> **NOTE**
>
> This topic describes only module-specific error codes. For details about universal error codes, see [Universal Error Codes](../errorcode-universal.md).

## 32390001 Bluetooth Disabled

**Error Message**

BR is disabled.

**Description**

This error code is reported if Bluetooth is disabled on the local device.

**Possible Causes**

Bluetooth is disabled on the local device.

**Solution**

Enable Bluetooth on the local device and try again.

## 32390002 Bluetooth Unpaired

**Error Message**

Device not paired.

**Description**

This error code is reported if the local device has not established a Bluetooth pairing.

**Possible Causes**

1. The local device has not established a Bluetooth pairing with the target device.
2. The Bluetooth service on the peer device has not enabled listening for pairing requests.
3. An invalid MAC address or UUID is used.

**Solution**

1. Use the Health & Fitness app to add the device and pair it via Bluetooth.
2. Check whether the Bluetooth service on the peer device has enabled listening for pairing requests.
3. Check whether the input MAC address and UUID are valid.

## 32390004 Invalid or Unavailable Channel ID

**Error Message**

ChannelId is invalid or unavailable.

**Description**

This error code is reported if the channel ID is invalid or unavailable.

**Possible Causes**

1. The input **channelId** is invalid, that is, it is not the one returned by **openProxyChannel**.
2. The related channel has been closed.

**Solution**

1. Review the code logic to determine if **channelId** is the one returned by **openProxyChannel**.
2. Review the code logic to determine if **channelId** is still used after the channel is closed. 

## 32390006 Parameter Verification Error

**Error Message**

Parameter error.

**Description**

This error code is reported if the parameter verification fails.

**Possible Causes**

1. The format of the input MAC address or service UUID is incorrect.
2. The type of the input parameters is incorrect.

**Solution**

Review 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.

## 32390100 Internal Error

**Error Message**

Internal error.

**Description**

This error code is reported if an internal error occurs.

**Possible Causes**

System errors, such as null pointer, insufficient memory, unexpected distributed service restart, IPC exception, and JS engine exception.

**Solution**

Try again. If the fault persists, restart the application, update the application, or update the device version.

## 32390101 Call Restricted

**Error Message**

Call is restricted.

**Description**

This error code is reported if an API call is restricted.

**Possible Causes**

The callers is not authorized to perform the operation.

**Solution**

Apply for the required permissions.

## 32390102 Operation Failed or Connection Timed Out

**Error Message**

Operation failed or Connection timed out.

**Description**

This error code is reported if the operation fails or the connection times out.

**Possible Causes**

The underlying Bluetooth is faulty, leading to a connection failure or timeout.

**Solution**

1. Enable and disable Bluetooth on the local device and the target device.
2. Restart the local device and the target device, and then enable Bluetooth on the devices.

## 32390103 Data Too Long

**Error Message**

Data too long.

**Description**

This error code is reported if the data to be sent exceeds the length limit.

**Possible Causes**

The length of the data to be sent exceeds 4096 bytes.

**Solution**

Check the length of the data to be sent.

## 32390104 Data Sending Failed

**Error Message**

Send failed.

**Description**

This error code is reported if data fails to be sent via Bluetooth.

**Possible Causes**

The underlying Bluetooth is faulty.

**Solution**

1. Restart Bluetooth on the local device and the target device.
2. Restart the local device and the target device.