The dolphinscheduler-bom module is used to manage the version of third part dependencies. If you want to import dolphinscheduler-xx to your project, you need to import dolphinscheduler-bom together by below way, this can help you to manage the version.

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.apache.dolphinscheduler</groupId>
            <artifactId>dolphinscheduler-bom</artifactId>
            <version>${dolphinscheduler.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

If you want to override the version defined in dolphinscheduler-bom you can directly add the version at your module's dependencyManagement.