Block `Close` Transition Until All Subtasks are Closed

 You will need the following JIRA plugins:

Problem

We want to block the task 'Close' transition if there are subtasks which are not closed. To accomplish that we need to add a new condition to the 'Close' transition.

Solution

Adding a new condition

Log in as an administrator and navigate to Administration-> Workflows and edit "Close Issue" transition on the default JIRA Jira workflow. Press `Add` Click Add a new condition:

Now add a '(k) SIL SIL™ condition':
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The following screen appears:

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Writing code

The following code (also shown above) does all the magic:

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See also

• Copy the reporter and watchers on duplicate issues
• Create an issue of a certain issue type when there is no Create permission
• Forbidding specific priorities for certain projects
• Restricting resolutions based on issue type
• Restrict sub-tasks based on Issue Type