# Architecture Requirement: [Title]

| Field | Value |
|---|---|
| ID | AR-[number] |
| Owner | [Accountable role] |
| Source | [Goal, stakeholder, policy, risk, or decision] |
| Priority | Must / Should / Could / Won't now |
| Status | Proposed / Approved / Implemented / Verified / Retired |
| Version | [Version] |

## Requirement

**The [subject] shall [measurable behavior or constraint] under [conditions].**

## Rationale

[Why it is needed and which outcome, concern, or risk it addresses.]

## Acceptance or verification

- Method: Review / Test / Analysis / Demonstration / Inspection
- Evidence:
- Threshold:
- Verification owner:
- Required date:

## Traceability

| Relationship | ID/link |
|---|---|
| Driver/goal/outcome | |
| Stakeholder/concern | |
| Principle/policy/risk | |
| Architecture element/ABB | |
| Work package/SBB | |
| Test/control evidence | |

## Constraints and dependencies

- [Constraint/dependency]

## Change history

| Date | Change | Rationale | Approved by |
|---|---|---|---|
| YYYY-MM-DD | Initial | | |