I want to get a report with all tickets Summary, Description, and all comments/ feedback that provide from the agent end. What's the way to generate this type of report.
This is not available by default in JIRA, but you should be able to do this by installing the Script Runner Plugin. This will allow you to run a jql query like this:
issueFunction in commented("by username")
in JIRA advanced search.
You may refer to the following for further reference:
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