Installed its-base (version f2bc136) and its-jira (version v2.12.2-42-gdeab5c6-dirty) on gerrit 2.12 with jira 6.3.6
When I push a change onto gerrit, I saw the status of the issue in jira was changed to "In Progress" and a comment was also added with the link to the gerrit change. That's great.
But when I merged the change in gerrit, the status of the jira issue did not change as expected, and I found the following error from the gerrit log:
[2016-08-02 15:43:59,929] [HTTP-81] ERROR com.googlesource.gerrit.plugins.its.base.workflow.ActionExecutor : Error while executing action Resolve Issue
com.googlesource.gerrit.plugins.its.base.its.InvalidTransitionException: Action Resolve Issue not executable on issue HP-433
at com.googlesource.gerrit.plugins.its.jira.JiraClient.doTransition(JiraClient.java:119)
at com.googlesource.gerrit.plugins.its.jira.JiraItsFacade.doPerformAction(JiraItsFacade.java:107)
at com.googlesource.gerrit.plugins.its.jira.JiraItsFacade.access$400(JiraItsFacade.java:31)
at com.googlesource.gerrit.plugins.its.jira.JiraItsFacade$3.call(JiraItsFacade.java:99)
at com.googlesource.gerrit.plugins.its.jira.JiraItsFacade$3.call(JiraItsFacade.java:95)
at com.googlesource.gerrit.plugins.its.jira.JiraItsFacade.execute(JiraItsFacade.java:143)
at com.googlesource.gerrit.plugins.its.jira.JiraItsFacade.performAction(JiraItsFacade.java:95)
at com.googlesource.gerrit.plugins.its.base.workflow.ActionExecutor.execute(ActionExecutor.java:73)
at com.googlesource.gerrit.plugins.its.base.workflow.ActionExecutor.execute(ActionExecutor.java:85)
at com.googlesource.gerrit.plugins.its.base.workflow.ActionController.onEvent(ActionController.java:63)
at com.google.gerrit.common.ChangeHookRunner.fireEventForUnrestrictedListeners(ChangeHookRunner.java:742)
at com.google.gerrit.common.ChangeHookRunner.fireEvent(ChangeHookRunner.java:754)
at com.google.gerrit.common.ChangeHookRunner.doChangeMergedHook(ChangeHookRunner.java:497)
at com.google.gerrit.server.git.MergeOp.setMerged(MergeOp.java:1011)