Related issues are identified by one of the following Jira concepts:
Issue Link: You can define the link type to define which issues exactly will be affected by the operation. If the link type is ANY, the operation will be performed on any linked issues.
Parent / Sub-Task:The related issue is either parent or sub-task of each other.
Epic / Issue inEpic: This is only applicable if you have Jira Software installed. The other issue is either the epic related by an epic link, or it is part of an epic.
JQL: A JQL query will be executed to find the issues, which will be affected by the post function. You can use some placeholders in the JQL query, which will be replaced with the current field values of the issue in transition. For tips on writing the JQL query, see JQL Reference or our JQL Use Cases for some examples.
Issue in Transition
We use the term 'Issue in Transition' when we refer to the issue for which a workflow condition is checked, for which a workflow validator is examined, or for which a workflow post function is performed; in other words, that issue triggered a workflow condition/validator/post function to be executed.
Source and Destination
For example, the Copy Value From Other Field post function allows you to define the issue in transition as the source or destination of the copy operations, while you define the other end with an issue relation. The field value is then read from the source issue and written to the destination issue. Other workflow modules do not have source and destination; you simply define the issue relation which applies for that workflow module. For example, the Create a Linked Issue post function creates a new issue and then connects it with some Issue Relation to the issue in transition.
While we try to execute as many configurations as possible, there are some restrictions you should keep in mind.
Copy Value From Other Field post function: there should be only one source issue. Otherwise, it is not clear from which the value will be read. (The current implementation will just pick one of them and ignore the rest.)
If you use Create a Linked Issue post function to create a new sub-task, you must also configure this post function to create the new issue as an issue type of a sub-task and make sure the target project is the same as the one for the issue in transition.
If you encounter problems, the workflow module will still run through but will add a message to the log file. See how to turn on the full logging for JSU in our Troubleshooting topic. It is advised that you do this while you test any new workflow configuration to make sure you're not missing anything.