---
id: DFMOD-C10-POS-003
title: "Activity log is read-only and snapshots stay immutable after later changes"
product: web
module: digital-form
type: functional
priority: P1
risk: high
status: draft
automationStatus: planned
sourceRefs:
  tsd: PK141
  tsdSection: C10
  tsdScenario: C10.3
  prd: PK141
  jira: null
automationRef: null
lifecycleStatus: active
lifecycleReason: "AI-generated draft from PK141 TSD C10.3; pending QA review."
lastReviewedAt: null
reviewedBy: null
supersededBy: null
duplicateOf: null
blockedBy: null
preconditionRefs:
  - PRE-DF-form-exists
tags:
  - web
  - digital-form
  - activity-log
  - audit-log
  - snapshot
  - pk141
  - staging
---
## Objective
Verify existing activity log entries never change and the log is read-only.

## Preconditions
- See [[PRE-DF-form-exists]]
- And an activity log entry exists for a compound or form

## Steps
1. Make a further change after that activity
2. Reload the activity log

## Expected Result
- Then old entries do not change
- And the log stays read-only (not editable from any UI)
- And an empty state shows clearly when there is no activity
- And reloading after a new edit leaves old entries identical

## Source Traceability
- TSD: PK141
- Section: C10 - Activity Log
- Scenario: C10.3 - Activity log read-only and immutable
- Acceptance Criteria: PRD C.37 Scenario 9,12,13; C.38 Scenario 16-18

## Evidence Required
- Old entry identical after a later change; no edit affordance.

## Notes / Gaps
- No gap.