GitHub user francisoliverlee added a comment to the discussion: Why rocketmq5
not support send batch message
old client. try this one
```
<dependency>
<groupId>org.apache.rocketmq</groupId>
<artifactId>rocketmq-client</artifactId>
<version>5.3.1</version>
</dependency>
```
you can check client code, not support without codes in-red-frame

GitHub link:
https://github.com/apache/rocketmq/discussions/9364#discussioncomment-12941537
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