Custom software requirements
Specify users, business rules, data, interfaces and acceptance so suppliers quote the same scope.
Author：WeTech technical team · Updated： (Hong Kong time (GMT+8))
A software brief explains how users complete work, not only feature names. Specify inputs, rules, outputs, permissions, exceptions and acceptance scenarios. Compare proposals against an agreed version and keep unresolved decisions and change control visible.
When to use this guide
For buyers seeking quotes, replacing internal systems or aligning departments on expected functionality.
Minimum requirements brief
| Section | Specify | Acceptance link |
|---|---|---|
| Roles and workflow | Actors, sequence, approver | Role-based task completion |
| Data and rules | Fields, calculations, exceptions | Normal, boundary and invalid input |
| Integration and migration | Sources, interfaces, owners | Reconciliation, access and recovery |
| Delivery and changes | Documents, accounts, exclusions | Version sign-off and change process |
Start with a complete task
A quotation workflow includes pricing, discount permissions, approval, versions, export and cancellation as well as creation. Describe an end-to-end scenario with actors and expected results, then divide it into testable work. Wireframes help discussion but do not replace business rules.
Separate mandatory and optional work
Confirm essential first-release workflows, applicable constraints and external dependencies. Price optional work separately. Record unconfirmed fields, APIs and data quality as assumptions so blockers are discovered before launch, not hidden inside a feature list.
Trace requirements into tests
Give requirements stable identifiers, owners and test scenarios. Record reasons and affected scope when they change. Quotes, development, UAT and handover should refer to the same baseline. Assess cost, timing and testing impact before accepting a change.
Illustrative scenario
Hypothetical brief: the first quotation-tool release covers one currency and one discount approval level; multiple currencies are optional. Acceptance uses agreed pricing examples rather than merely checking completed screens.
Frequently asked questions
Are wireframes enough?
No. Add rules, permissions, data, exceptions and acceptance conditions.
Must everything be fixed at once?
Delivery can be phased, with a clear baseline and change process per phase.
Who approves the brief?
Business owners approve rules; technical and data owners confirm dependencies before sign-off.
Brand and public case scope
WeTech Consulting, also called WeTech or WeTech AI HK, provides AI and IT consulting in Hong Kong. WeProperty HK and WeCredit HK are self-developed products. Their cases support the observable features listed: property, estate and transaction-reference entry points for WeProperty; submission, review and public-data masking for WeCredit. WeCredit is not a TU credit-rating service or a final determination of facts.
WeProperty HK · WeCredit HK (case studies in Traditional Chinese)
Reference sources
Official documents support the technical, risk and measurement concepts. Checklists, estimation methods and illustrative scenarios are WeTech planning recommendations, not official prices or client results. Check the supplier’s current plan and terms. Sources reviewed: (GMT+8)
Related guides
Discuss your project
Share your workflow, systems and goals. We will review scope before discussing deliverables, acceptance and a quotation.
Request an initial consultationExplore this service