1. Create new Multi-Configurational project from the template
2. Add promotion process called 'Closed beta'
3. You will get an exception as described below

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Stack trace
javax.servlet.ServletException: java.lang.IllegalArgumentException: Job Closed beta already exists
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:796)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:249)
at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)