How to fetch more than 30 project area data in a single RPE Template?

You can use the project feed service to get the names of projects, their alias and urls. In RPE, add a projects schema (<integrationUrl>/projects?metadata=schema for getting schema and https://sptests:9443/qm/service/com.ibm.rqm.integration.service.IIntegrationService/projects as data source URI). In RPE template, use Data Source Configuration element to construct testcase feed URL for each project. Using an internal variable, you can count the number of test cases in each project. You can print project title and test case count for each project.