Mapping of Test Cases that have been scripted through Rapise

When you have hundreds of requirements and thousands of test cases, is there a proper way of mapping what have been automated ?

What I have done is just create a Requirement: Rapise - Automated Test Pool, and connect every single test case that have been scripted through Rapise in to this.
That way it is easy to create a report/list of test cases that have not been scripted yet.