LEARN. PRACTICE. GROW.Concept and mechanism
A requirement represents a need in a usable form; a design represents a possible solution. Both can evolve as the team learns. When requesting file-receipt confirmation, first describe the expected result and acceptance conditions; a design might propose an event, an API call, or portal status. Do not turn an initial preference into an unavoidable constraint without understanding its reason. Distinguish business, stakeholder, solution, and transition requirements. Solution requirements include functional capabilities and qualities such as performance and availability. Temporary data migration differs from the ongoing obligation to recover service within an agreed deadline.
Guided application
Compare alternatives using the same criteria: need coverage, feasibility, risk, cost, and operating conditions. A prototype can clarify interaction and messages without automatically demonstrating performance under load or recovery after failure. Requirement verification addresses quality and consistency; validation addresses alignment with objectives and expected value. In an exercise, every field check passes, but the report arrives after the decision it should support. The solution may pass technical checks while still missing the need. Document the gap and support an appropriate recommendation. During handover, preserve known limits, acceptance criteria, and evidence so operations knows what was actually demonstrated.
An accepted prototype does not establish that recovery was exercised.
Common pitfalls
Preference treated as constraint; field checking treated as useful outcome; transition treated as permanent requirement.
Related topics: Need, value, and BACCM · Mindset, examples, and collaboration · Approach, change, and traceability
Link every option and evidence item to the need it aims to satisfy.
Reference: Requirements designs categories and traceability · 2025-07-21 / blueprint V1.1