in src/main/java/org/apache/sling/maven/kickstart/run/ProcessDescriptionProvider.java [92:99]
public synchronized void addRunConfiguration(ProcessDescription cfg, final String unlockKey) throws Exception {
String id = cfg.getId() == null ? DEFAULT_KEY : cfg.getId();
if (!lockedIds.containsKey(id) || !lockedIds.get(id).equals(unlockKey)) {
throw new Exception("Cannot add configuration. Id " + id + " doesn't exist");
}
lockedIds.remove(cfg.getId());
configs.put(cfg.getId(), cfg);
}