# S03013 {#s03013}

## Error Code {#error_code .section}

S03013

## Error Message {#error_message .section}

-   `Failed to deserialize the heterogeneous stream table, with unknown msgType {MSG}. RefId:S03013`
-   `Failed to deserialize the heterogeneous stream table, with IO error type {IO_ERR}. RefId:S03013`

## Probable Causes {#probable_causes .section}

A parsing error occurs when deserializing a heterogeneous stream table with `streamFilter` if the parameter *msgSchema* is not correctly specified.

Probable causes include:

-   The input tables for the heterogeneous stream table are not specified.
-   The specified *msgSchema*does not match the schema of the heterogeneous stream table.

## Solutions {#solutions .section}

Make sure the specified *msgSchema*and the heterogeneous table schema are consistent.

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

