Use -DdryRun to check what will be executed and changed on JIRA without actually changing anything!

Run

mvn smartics-jira:versions 

on a project to add the current version and the next micro, minor, and major version on JIRA.
For instance, if your project is currently in version 2.3.1-SNAPSHOT, running the above command will ensure that the related project (identified with the issue management in your project's POM) on your JIRA server will have versions 2.3.1, 2.3.2 (next micro), 2.4.0 (next minor), and 3.0.0 (next major) configured. If any version already exists, that's fine. If not, it will be created.

See Update Versions for more details.

Run

mvn smartics-jira:sync 

on a project to check the differences in name, description, and URL between this information in the POM and on the JIRA project.

Run

mvn smartics-jira:issues -DrootIssue=MYPROJ-1 -DprojectKeys=MYOTHERPROJ1,MYOTHERPROJ2

to create dependent issues in upstream projects. This is useful if a change in one project has positive effect, like fixing a bug or adding a new feature, without the other projects needing to be touched.