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2. At "Requirement Projects" (JIRA Administration > Manage Apps > Xray) you have at least one project available.
3. At "Issue Types Schemes" check if Xray Issue Types ( at least Test, Test Execution & Test Plan) are available at least in one scheme used by at least one project.
4. At "Issue Type Screen Schemes" check if Xray Issue Screens Schemes ( at least Test Screen Scheme; Test Execution Screen Scheme & Test Plan Screen Scheme) are available at least in one scheme used by at least one project.