During the release process for Apache Syncope 2.1.14 I noticed that release:prepare was not advancing POM version from
2.1.14-SNAPSHOT to 2.1.14, nor it was creating the syncope-2.1.14 tag.
Waiting to understand the reason, I was able to replace the actions peformed by release:prepare and release:perform with the following.
Plugin steps: http://maven.apache.org/maven-release/maven-release-plugin/examples/prepare-release.html