# S03018 {#s03018}

## Error Code {#error_code .section}

S03018

## Error Message {#error_message .section}

`warmupStreamEngine currently only supports the reactive state engine and time series engine. RefId: S03018`

## Probable Causes {#probable_causes .section}

The warmup stream engine only supports the reactive state engine and \(daily\) time series engine. This error occurs when `warmupStreamEngine` is invoked by other engines \(or in a streaming engine pipeline\).

## Solutions {#solutions .section}

-   Use the warmup stream engine only for the reactive state engine and \(daily\) time series engine.
-   To take the outputs of the above three types of engines as the inputs of other engines, you need to output the results to a stream table and subscribe to this table with other engines.

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

