DECISION
LAYER 05
EXPIRE / IMPLEMENTATION ARCHITECTURE
Retention and deletion
Use purpose and event triggers to drive warnings, holds, deletion, backup expiry and proof.
Engineering control
Engineering layer
not a legal conclusion
DEFAULT OWNER MODEL
Data owner with records, platform, backup and legal-hold owners
LEGAL / STATUS BOUNDARY
Retention topics can depend on entity class, purpose, other applicable law and commencement tranche. Do not infer a universal period from this layer.
Open status console →SOURCE / STATUS BOUNDARY
Verify the legal status before implementation.
Engineering controlLayer verification pointers
These IDs are verification pointers to the primary-source ledger. They are not provision mappings, applicability findings or legal conclusions.
GOOD SYSTEM PATTERN
Build the path, then test the path.
A retention engine consumes approved events, applies scoped rules and holds, orchestrates deletion and records independently sampled outcomes.
01Decision
02Owner
03System event
04Evidence
EVIDENCE THAT SHOULD EXIST
- Approved event-to-retention rule
- Warning or pre-expiry event where applicable
- Deletion acknowledgements from dependent systems
- Backup expiry and exception evidence
HOW THIS LAYER FAILS
- A duration exists without a reliable start event
- Account deletion is mistaken for complete data deletion
- Backups and derived datasets never receive an expiry path
ARCHITECTURE → EVIDENCE DECISION JOURNEY
Follow the dependency, then inspect the proof.
Each connection uses existing catalogue records. Source IDs remain verification pointers—not provision mappings.
Add to a review route- Layer pathwayRetention and deletion
- 01 · PrerequisiteRequest exercise record
Carry forward the reviewed evidence boundary from Rights and grievance operations.
Engineering indicator · not a legal requirement · Verification pointers: dpdp-act-2023 - 02 · Implementation patternRetention event engine
Convert approved purpose and lifecycle events into scoped expiry work and verifiable outcomes.
Engineering indicator · not a legal requirement · Verification pointers: dpdp-act-2023, dpdp-rules-2025, act-commencement-2025 - 03 · Validation / testTest RET-01
Trace the sample from its trigger and owner through the implemented system to the retained evidence.
Engineering indicator · not a legal requirement · Verification pointers: dpdp-act-2023 - 04 · Evidence artefactApproved event-to-retention rule
Primary retrievable output for expire; inspect the full layer evidence set before drawing a conclusion.
Engineering indicator · not a legal requirement · Verification pointers: dpdp-act-2023, dpdp-rules-2025, act-commencement-2025 - 05 · Failure modeA duration exists without a reliable start event
A visible failure case keeps a completion label from hiding an evidence gap.
Engineering indicator · not a legal requirement · Verification pointers: dpdp-act-2023, dpdp-rules-2025, act-commencement-2025 - 06 · Research notePrivacy engineering for Indian MSMEs: where simplicity matters
A small organisation can begin with named owners, a compact inventory and a few tested lifecycle paths while avoiding unsupported readiness claims. Radar context: Event-driven retention is Trial.
Editorial analysis · reviewed 2026-08-30 · sources pib-rules-explainer-2025, pib-status-2026 - 07 · Specialist propertyPractical tools
Explore practical tool concepts after the trigger and evidence design are understood. This route remains optional if the destination is unavailable.
Contextual external property · no affiliation or availability implied
- 01 · PrerequisiteRequest exercise record
Open semantic relationship table (1pathway)
| Record | Phase | Relationship | Status / boundary | Source pointers |
|---|---|---|---|---|
| Retention and deletion | 01 · Prerequisite | Request exercise record Carry forward the reviewed evidence boundary from Rights and grievance operations. | Engineering indicator · not a legal requirement · Verification pointers: dpdp-act-2023 | dpdp-act-2023 |
| Retention and deletion | 02 · Implementation pattern | Retention event engine Convert approved purpose and lifecycle events into scoped expiry work and verifiable outcomes. | Engineering indicator · not a legal requirement · Verification pointers: dpdp-act-2023, dpdp-rules-2025, act-commencement-2025 | dpdp-act-2023 · dpdp-rules-2025 · act-commencement-2025 |
| Retention and deletion | 03 · Validation / test | Test RET-01 Trace the sample from its trigger and owner through the implemented system to the retained evidence. | Engineering indicator · not a legal requirement · Verification pointers: dpdp-act-2023 | dpdp-act-2023 |
| Retention and deletion | 04 · Evidence artefact | Approved event-to-retention rule Primary retrievable output for expire; inspect the full layer evidence set before drawing a conclusion. | Engineering indicator · not a legal requirement · Verification pointers: dpdp-act-2023, dpdp-rules-2025, act-commencement-2025 | dpdp-act-2023 · dpdp-rules-2025 · act-commencement-2025 |
| Retention and deletion | 05 · Failure mode | A duration exists without a reliable start event A visible failure case keeps a completion label from hiding an evidence gap. | Engineering indicator · not a legal requirement · Verification pointers: dpdp-act-2023, dpdp-rules-2025, act-commencement-2025 | dpdp-act-2023 · dpdp-rules-2025 · act-commencement-2025 |
| Retention and deletion | 06 · Research note | Privacy engineering for Indian MSMEs: where simplicity matters A small organisation can begin with named owners, a compact inventory and a few tested lifecycle paths while avoiding unsupported readiness claims. Radar context: Event-driven retention is Trial. | Editorial analysis · reviewed 2026-08-30 · sources pib-rules-explainer-2025, pib-status-2026 | pib-rules-explainer-2025 · pib-status-2026 |
| Retention and deletion | 07 · Specialist property | Practical tools Explore practical tool concepts after the trigger and evidence design are understood. This route remains optional if the destination is unavailable. | Contextual external property · no affiliation or availability implied | None · contextual external route |
LOCAL WORKSPACE NOTE
Give this work a next owner.
Nothing is sent anywhere. Avoid names, personal data or confidential incident details.