Requirements gathering for Dynamics 365 implementations
How to gather requirements effectively for a Dynamics 365 implementation — workshop techniques, business process analysis, prioritisation, and the discipline that produces useful FDDs.
Requirements gathering is the foundation of every Dynamics 365 implementation. Done well, it produces clear functional designs and confident scoping; done badly, it leads to discovery surprises, rework, and budget overruns. The methodology matters less than the discipline applied.
The output goals.
- Clear understanding of as-is processes.
- Defined to-be processes.
- Specific functional requirements.
- Non-functional requirements (performance, security, etc.).
- Prioritisation (must-have, should-have, nice-to-have).
- Documented assumptions and risks.
- Stakeholder consensus.
The output feeds FDDs, TDDs, and project planning.
Workshop-based approach. Most common:
- Facilitated workshops per business area.
- Stakeholders engaged in person or virtually.
- Documented in real-time.
- Iterative validation.
The workshop format produces alignment alongside requirements.
Workshop preparation.
- Pre-read materials sent.
- Specific agenda.
- Right participants invited.
- Workshop length appropriate (half-day to multi-day).
- Logistics organised.
Unprepared workshops waste senior time; preparation matters.
Discovery techniques.
- Process mapping — walk through current state step by step.
- Pain point analysis — what's broken in current process?
- Aspirational visioning — what would the future look like?
- Quick-win identification — what's easy and high-impact?
- Edge case discussion — what unusual scenarios occur?
Combine techniques to draw out comprehensive requirements.
As-is vs to-be.
- As-is — current state documentation.
- To-be — desired future state.
The gap analysis between them is the implementation scope.
Why document as-is. Tempting to skip:
- Saves time.
- Future-focused.
But:
- Reveals dependencies on legacy.
- Surfaces process knowledge held by individuals.
- Provides context for to-be design.
Always document as-is, even briefly.
To-be process design.
- Reflect best practices.
- Match Dynamics 365 standard processes where appropriate.
- Customise only where business genuinely demands.
- Validate with stakeholders.
The "fit-gap" analysis identifies where standard fits and where it doesn't.
Functional vs non-functional requirements.
- Functional — what the system does (e.g., "create sales order").
- Non-functional — quality attributes (performance, security, scalability, usability).
Both essential; non-functional often overlooked until late.
Common non-functional requirements.
- Performance — response time targets.
- Availability — uptime requirements.
- Scalability — user count, data volume.
- Security — encryption, access control, audit.
- Compliance — regulatory requirements.
- Accessibility — WCAG, Section 508.
- Localisation — multi-language, multi-currency.
These shape architecture and implementation.
Prioritisation methods.
- MoSCoW — Must, Should, Could, Won't.
- High / Medium / Low.
- Value vs effort matrix.
- Cost / benefit analysis.
Force ranking — be explicit about trade-offs.
Stakeholder management.
- Executive sponsors — strategic direction.
- Business owners — process accountability.
- Subject matter experts — operational detail.
- Power users — daily use perspective.
- IT team — technical integration.
Engage appropriate level for each requirement type.
Documentation formats.
- Process narrative — text describing flow.
- Flow diagrams — visual.
- User stories — "As a [role], I want [action], so that [benefit]."
- Use cases — formal scenarios.
- Requirements catalogue — structured list.
Different audiences prefer different formats; multiple representations may help.
Tools.
- Microsoft Word / Excel — common.
- Microsoft Loop / OneNote — collaborative.
- Confluence — for development-led teams.
- DevOps Boards — user stories tied to development.
- Specialised requirements tools — IBM DOORS, others.
Tool choice less important than discipline.
Validation cycles.
- Draft requirements.
- Review with stakeholders.
- Revise based on feedback.
- Validate with final readers.
- Sign-off at design completion.
Iteration is healthy; first-draft signed off rarely matches reality.
Common pitfalls.
- Wishlist syndrome. Every nice-to-have included; scope explodes.
- Anchoring on current. "Same as today but in Dynamics" — misses opportunity.
- Missing edge cases. Happy path documented; exceptions emerge in test.
- No prioritisation. Everything's a "must"; budget impossible.
- Stakeholder absence. Key person missed; requirements gap.
- Verbal-only agreement. Documented vaguely; interpretation differs.
Discovery anti-patterns.
- Boil-the-ocean discovery. Months of analysis paralysis.
- Insufficient discovery. Rush to build; discoveries come later as change orders.
- Wrong abstraction level. Either too detailed too early or too vague throughout.
Time-boxing. Discovery shouldn't be indefinite:
- Plan phase duration.
- Acknowledge some unknowns won't resolve until later.
- Document what's known and assumed.
- Move forward; refine during build.
Iterative discovery. For agile implementations:
- High-level requirements upfront.
- Detailed per-sprint discovery.
- Backlog grooming.
Suitable for some projects, not all; depends on scope clarity.
Standard vs custom. Important judgement:
- Adopt standard wherever possible — easier maintenance.
- Customise only where business value clearly justifies.
The "we always do it this way" reflex often hides opportunities to adopt better-fitting standards.
Strategic positioning. Requirements gathering is investment in clarity. Spent well, it produces confident designs; spent poorly, it produces brittle specifications that don't survive contact with build. Mature implementations balance enough discovery to design confidently with enough humility to refine during build.
For project leaders:
- Plan discovery time deliberately.
- Engage right stakeholders.
- Document candidly, not aspirationally.
- Prioritise ruthlessly.
- Iterate; don't expect first pass to be final.
The discipline is constant attention to clarity and stakeholder engagement; the payback is build phases that proceed smoothly without constant re-questioning of requirements.
Related guides
- Budget management for Dynamics 365 implementationsHow to budget and manage costs for a Dynamics 365 project — cost categories, tracking discipline, change control, and the patterns that prevent budget overruns.
- Business process mapping for Dynamics 365How to map business processes for a Dynamics 365 implementation — process hierarchies, BPMN notation, scenarios, and the patterns that produce useful process documentation.
- Change management for Dynamics 365How to run change management on a Dynamics 365 implementation — stakeholders, comms, training timing, and the cultural patterns that decide adoption.
- Change readiness assessment for Dynamics 365 implementationsHow to assess organisational readiness for a Dynamics 365 implementation — readiness dimensions, surveys and interviews, gap analysis, and the interventions that close gaps before go-live.
- Cutover planning for Dynamics 365How to plan the production cutover for a Dynamics 365 implementation — the cutover playbook, data migration windows, parallel running, and the high-pressure days around go-live.