# S10006 {#S10006}

## Error Code {#error_code .section}

S10006

## Error Message {#error_message .section}

`Unsupported keyColumn type: <xxx>. RefId: S10006`

## Probable Causes {#probable_causes .section}

This error occurs when the key column type is not supported by the device engine.

**Note**: The device engine only supports the following data types as key columns: standard numeric types \(excluding DECIMAL and INT128\), STRING, SYMBOL, and TEMPORAL types.

## Solutions {#solutions .section}

Modify the key column to a supported data type.

**Parent topic:**[Error Code Reference](../../Troubleshooting/ErrorCode.md)

