# S12009 {#S12009}

## Error Code {#error_code .section}

S12009

## Error Message {#error_message .section}

`An error occurred during level file compaction. Please contact technical support. RefId: S12009`

## Probable Causes {#probable_causes .section}

This error occurs when the system fails to correctly obtain data from the level files whose column data is being compacted.

## Solutions {#solutions .section}

Contact DolphinDB technical support.

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

