Who is responsible for requirements during a software project?
Requirements are not written once by one party and handed over. The client owns business goals, rules, priorities, and acceptance decisions. Wavesteam owns clarification, prototypes, technical constraints, impact analysis, and verifiable delivery. Each side appoints one authorized lead, and conflicting or new requests enter one managed backlog through those leads.
An external team cannot decide the client's discount policy, approval responsibility, or lawful data use. Conversely, a client should not prescribe database, cache, and interface implementation and then transfer the technical risk to the developer. Productive responsibility is based on decision rights rather than the vague phrase “both parties are jointly responsible.”
When decomposing features, data, and acceptance scenarios, also compare How are requirement changes controlled and charged during a project?; the linked guidance adds context that should be considered in the same decision.
| Decision or artifact | Client business owner | Wavesteam product and engineering | Shared evidence |
|---|---|---|---|
| Objective and priority | Decides value and sequence | Proposes feasible paths and cost impact | Goal, scope, and explicit exclusions |
| Rules and samples | Supplies real flow, exceptions, and definitions | Finds contradictions and turns them into states and prototypes | Process, data dictionary, and sample records |
| Technical solution | States regulatory, budget, and existing-system constraints | Owns architecture, performance, security, and integration advice | Design, risks, interfaces, and capacity assumptions |
| Change | Approves business value, budget, or delay | Assesses dependencies and rework | Change record and revised plan |
| Acceptance and launch | Organizes real-user validation and makes the business decision | Supplies builds, test results, and defect correction | Cases, results, known issues, and approval |
The client's owner need not write every requirement but must resolve input from sales, operations, finance, legal, and frontline users within the agreed time. The Scrum Guide similarly places product value and backlog effectiveness with one Product Owner. A project need not use Scrum to benefit from one business decision route; it prevents multiple stakeholders from issuing contradictory instructions directly to developers.
Wavesteam turns conversation into testable material. “Build membership” prompts us to define qualification, activation, refund reversal, and cross-location use. Engineering identifies account, payment, migration, and concurrency effects. Design and testing convert normal and exceptional paths into prototypes and cases. A requirement is ready only when both sides can use the same representative example and predict the same result.
When facts change, classify them before assigning responsibility. A build that misses a confirmed prototype or criterion is a defect. Ambiguous source material requires a clarified rule and contractual impact decision. A new client rule, channel, or scope is a change. A supplier policy or API change follows the dependency allocation. Effort alone—such as “under two hours”—does not determine the class because a small-looking edit can affect data, permissions, and completed tests.
Each requirement needs a business purpose, role, trigger, main and exception flow, data, permissions, acceptance example, and exclusions. Link decisions to a version and owner. After development begins, Wavesteam reports affected modules, work, tests, date, and price; the client owner records whether to exchange current scope, defer, or add budget. Unresolved ideas remain in the backlog rather than becoming developer guesses.
Process health appears in decision aging, the share of confirmed work ready for development, defects reopened for unclear rules, mid-iteration changes, first-pass acceptance, and missed rules after launch. Use these signals to repair collaboration, not to blame one person. Meeting cadence, project-management capacity, and response times remain proportional contractual terms.
At handover, the client receives the current requirements and change history, final prototype, field and interface definitions, acceptance evidence, and remaining-work list, all aligned with the delivered version. The ISO/IEC/IEEE 29148 overview identifies the requirements-engineering standard; Wavesteam's Transparent Delivery Standard describes the public scope and asset principles.