What is described as the date after which a requirement loses considerable value?

The concept described as the date after which a requirement loses considerable value is known as the Value Expiration Date. This term refers specifically to the notion that certain requirements carry an inherent time sensitivity, meaning that their relevance and usefulness can diminish over time. As market conditions, technologies, and business needs evolve, the urgency and importance of previously identified requirements may decline, making them less viable after a certain point.

Time Sensitivity relates more broadly to how the timing of a requirement can affect its success and potential benefits, but it does not specifically denote an expiration point. Requirement Status merely indicates the current standing or progress of a requirement within the lifecycle, rather than its value over time. Conversely, Implementation Threshold pertains to the point at which a requirement is considered ready for implementation, but again does not correlate directly to the value diminishing over time.

In summary, the Value Expiration Date specifically captures the essence of time-sensitive requirements and their diminishing worth, making it the most accurate concept for the situation described.