Final answer:
Black box test cases should be drawn up as soon as possible after the requirements workflow is complete to ensure a better understanding of the system's functionality.
Step-by-step explanation:
Black box test cases should ideally be drawn up as soon as possible after the requirements workflow is complete.
By doing so, the team can have a clear understanding of the requirements and design the test cases accordingly.
Waiting until after the requirements workflow is complete allows the team to have a better understanding of the system being developed and ensures that the test cases reflect the actual functionality of the system.