How to block(prevent) reporters from workflow transition, Ideally reporters should not perform approve transition on my workflow.
If you're using the Server (not Cloud) version of Jira, there is an add-on called Misc Workflow Extensions that provides a number of workflow conditions that would be helpful. I'm not aware of any add-on that has a "not reporter" condition, but if you're trying to do approvals, you can do it the opposite way. You can create an "Approvers" project role and add all possible approvers to the role, then use the "User is in Project Role" Condition to only make the workflow button appear for the approvers. Hopefully that will help point you in the right direction.
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