In Zephyr, we can establish the relationship between the requirement issue type and test cases by linking the issues.
- In order to do this, first create a requirement issue type in Zephyr. On the Create issue screen, there is a field called Linked Issues. Click on it. This reveals the following screenshot, from where related issues—in our case, a test case—can be linked:

- Once we are done linking all the test cases to the requirement issue type, the links can be viewed from the Issue Links section. Now, since the test case in Zephyr is also an issue type, by following the same steps, we can link requirements to the test case issue. ...