|Jira Agile 6.3
One or more of the below symptoms may apply to JIRA Agile:
If using JIRA Agile 6.7.0 or higher, use the LexoRank Management tool to run an integrity check. Otherwise, access
<JIRA_BASE_URL>/rest/greenhopper/1.0/lexorank/integrity - for example https://jira.atlassian.com/rest/greenhopper/1.0/lexorank/integrity. You must be an admin to run this.
It may help to copy/paste the results into something like jsonprettyprint.com as it will make it easier to read.
If the rank integrity checker doesn't pass on Duplicate Ranks Check, this KB will apply.