<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	<modelVersion>4.0.0</modelVersion>

	<parent>
		<groupId>org.eclipse.birt</groupId>
		<artifactId>org.eclipse.birt-parent</artifactId>
		<version>0.0.1-SNAPSHOT</version>
		<relativePath>../</relativePath>
	</parent>

	<groupId>org.eclipse.birt.common</groupId>
	<artifactId>org.eclipse.birt.common-parent</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>pom</packaging>

	<modules>
		<module>org.apache.derby.core</module>
		<module>org.w3c.sac</module>
	</modules>
</project>

<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
	<modelVersion>4.0.0</modelVersion>

	<parent>
		<groupId>org.eclipse.birt</groupId>
		<artifactId>org.eclipse.birt-parent</artifactId>
		<version>0.0.1-SNAPSHOT</version>
		<relativePath>../</relativePath>
	</parent>

	<groupId>org.eclipse.birt.common</groupId>
	<artifactId>org.eclipse.birt.common-parent</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>pom</packaging>

	<modules>
		<module>org.w3c.sac</module>
	</modules>
</project>

Remove org.apache.derby.core since it's already replaced by org.apache.derby
Remove org.apache.derby.core since it's already replaced by
org.apache.derby