groupId is invalid, please read https://docs.sonatype.org/display/Repository/Choosing+your+Coordinates
Some other groupId (like "net.sf.cewolf") would be fine with me, provided there are no problems with the existing cewolf entry. That uses groupId "cewolf"; see http://repo2.maven.org/maven2/cewolf/cewolf/maven-metadata.xml. Would both be considered to be the same project?
we only accept net.sf.cewolf here, so you need to tell your users to use it for new versions
updating groupId to net.sf.cewolf
Configuration has been prepared, now you can: