The <scm> tag should be configured in the project's pom.xml. It should look similar to the following
<scm> <connection>scm:svn:[project_url]</connection> <developerConnection>scm:svn:[project_url]</developerConnection> <url>[URL of the project]</url> </scm>
mvn clean install or mvn install
mvn npanday.plugin:NPanday.Plugin.SysRef.JavaBinding:prepare
mvn release:prepare
mvn release:perform
For Maven guide, you can refer to Better Builds with Maven.