Remove Report

You may want to generate only one of the reports, but not the other. To do this you can use the <reportSets> feature within your POM. Below is the default configuration for the plugin. To disable one of the reports, just copy the <reportSets> element below to your POM and remove the <report> you don't want to generate.

<project>
  ...
  <reporting>
    <plugins>
      <plugin>
        <artifactId>maven-pmd-plugin</artifactId>
        <version>3.4</version>
        <reportSets>
          <reportSet>
            <reports>
              <report>pmd</report>
              <report>cpd</report>
            </reports>
          </reportSet>
        </reportSets>
      </plugin>
    </plugins>
  </reporting>
  ...
</project>