I have seen examples of Kanban boards where a work item is marked with a red sticker or something similar if it is blocked for some reason. Is there a way to do this in the JIRA Kanban board?
Among the things I thought about already:
You could use the flags, although this actually represents an impediment: https://confluence.atlassian.com/display/AGILE/Flagging+an+Issue. Also, since JIRA Agile 6.6 you can add a field to your cards, so you could use a (custom) field to display that the issue is blocked.
As an update to my recent comment (and a possible answer, however late), I want to point out that Atlassian has very recently introduced a new JQL function called issueLinkType, which can be used in filters, but also in boards.
It's not perfect; if you're already using card colors for something else, you won't be able to use this as well. It also behaves inconsistently when a ticket has links of multiple types. But if you're looking for an easy way to get a view into what might be blocked, and what might have blockers, it works pretty well.
Like I said, it's not perfect :) But it's more than we had before. As to distinct issue keys, I don't know - you'd need to contact Atlassian about that. You could comment on the ticket that announced the new functionality, but I don't know if Atlassian pays attention to comments on closed tickets, as they have not responded to a comment I posted a month ago.
ETA that it's not native, but if you have ScriptRunner, you can use the enhanced search functionality to pull issues that have blockers that are still open, and vice versa.
This will display issues that are blockers in a project where the issue itself (the blocker) is not closed and where the parent issue isn't closed:
issueFunction in linkedIssuesOf("project = PHTP and status != Closed", "is blocked by") and status != Closed
And this will give you the reverse - show issues that are blocked, where the issues themselves are open and the issues doing the blocking are open:
issueFunction in linkedIssuesOf("project = PHTP and status != Closed", "blocks") and status != Closed
Remember that time you realized it was possible to refresh your Jira data in Google sheets with just one click? What if we told you that you can now get the latest data with no clicks at all?! Zero! ...
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