Assumption Log
Template Library
Assumption Log
Record assumptions, sources, impact if wrong, validation plan, owner, status, validation evidence, and retirement.
Reusable
Assumptions
Assumption Control
Template purpose
Use this template to record assumptions, their source, impact if wrong, validation plan, owner, and status.
Project
<Project name>
Document control
| Field |
Value |
| Artifact owner |
<owner> |
| Related Stage |
<ES-### or cross-cutting> |
| Status |
<draft / active / reviewed / accepted> |
| Last updated |
<YYYY-MM-DD> |
| Project workspace target |
docs/project-workspace/shared/assumption_log.md |
Assumption register
| ID |
Assumption |
Source |
Impact if Wrong |
Validation Plan |
Owner |
Status |
| A-001 |
<assumption> |
<source> |
<impact> |
<validation> |
<owner> |
<open / validated / retired / invalidated> |
High-risk assumptions
| Assumption |
Why High Risk |
Validation Needed |
<assumption> |
<reason> |
<validation> |
Validated assumptions
| Assumption |
Validation Evidence |
Date |
<assumption> |
<evidence> |
<date> |
Retired assumptions
| Assumption |
Reason Retired |
Evidence |
<assumption> |
<reason> |
<evidence> |
Invalidated assumptions
| Assumption |
Impact |
Corrective Action |
<assumption> |
<impact> |
<action> |
Review checklist
- [ ] Assumptions have sources.
- [ ] Impact if wrong is explicit.
- [ ] Validation plan and owner are assigned.
- [ ] High-risk assumptions are visible.
- [ ] Retired and invalidated assumptions include evidence.
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