Automated Warehouse post-validation QC closes 86 missing rationales
System
{{entity:Automated Warehouse}} — post-validation QC session (Flow E). The system entered this session with DECOMPOSITION_STATUS = validated after passing validation in session 250. This is the final quality gate before marking the decomposition complete. The project holds 176 requirements across 7 subsystems, 52 PART_OF relationships, 54 CONNECTS facts, and 163 trace links.
Findings
The critical finding was 86 of 176 requirements lacked rationale — a systemic gap spanning all document types. Breakdown: 45 subsystem requirements (SUB-REQS-001–010, 029–063), 7 architecture decisions, 4 system requirements from the validation session ({{sys:SYS-016}}, {{sys:SYS-017}}, {{sys:SYS-018}}, {{sys:SYS-019}}), 1 interface requirement ({{ifc:IFC-036}}), and 29 verification plan entries (VER-METHODS-001–005, 016–036, VER-037–039). One requirement (ARC-DECISIONS-001) also lacked a verification attribute.
{{sys:SYS-019}} was identified as a duplicate of {{sys:SYS-016}} — both specify IEC 62443-3-3 SL2 network segmentation — and was orphaned with no trace links. It had been correctly tagged duplicate-of-SYS-016 during validation but left without rationale or traceability.
Lint returned 4 findings (1 high, 3 low). The high finding flags {{entity:Automated Warehouse}} {{hex:55E73218}} as lacking the Physical Object trait while having physical constraints in {{stk:STK-NEEDS-007}}. This is ontologically correct — the warehouse is a system-level abstract entity; physical embodiment is expressed through its subsystems. The 3 low findings are ontological ambiguity between the system entity and its physical components ({{entity:Robotic Pick Arm}} {{hex:DFF53018}}, {{entity:End-Effector and Gripper System}} {{hex:DFF73018}}) and the expected absence of “SHALL” in architecture decisions and verification procedures. All 4 findings acknowledged.
9 orphaned requirements remain — all architecture decisions ({{sub:ARC-DECISIONS-001}} through {{sub:ARC-DECISIONS-009}}). These are design rationale records that do not naturally participate in derives/verifies trace linksets.
Corrections
All 86 missing rationales were added with engineering-specific justifications:
- 45 subsystem requirements: Each rationale explains the derivation of specific performance values and what system-level consequence results from not meeting the requirement. Examples: {{sub:SUB-REQS-001}} crane throughput derived from the 50,000 lines/hr target across 6 aisles; {{sub:SUB-REQS-045}} fire suppression timing derived from FM Global guidelines and fire load analysis.
- 7 architecture decisions: Rationales explain why each decomposition topology was chosen over alternatives — {{sub:ARC-DECISIONS-002}} explains mini-load cranes over shuttle systems for deterministic throughput.
- 4 validation system requirements: {{sys:SYS-016}} IEC 62443 justification, {{sys:SYS-017}} UPS transfer time from PLC brown-out prevention, {{sys:SYS-018}} synchronous replication to prevent split-brain inventory.
- 1 interface requirement: {{ifc:IFC-036}} DMZ protocol restriction for OT zone protection.
- 29 verification entries: Each explains why the specific test method and conditions were chosen.
{{sys:SYS-019}} received rationale documenting its duplicate status. A trace link from {{stk:STK-NEEDS-002}} to {{sys:SYS-019}} was added to resolve orphan status. ARC-DECISIONS-001 verification attribute set to Inspection.
Final state: 0 requirements missing rationale, 0 missing verification.
flowchart TB
AW[Automated Warehouse]
ASRS[AS/RS]
AMR[AMR Fleet]
WMS[WMS]
MHC[Conveyor System]
RPS[Robotic Picking]
BMS[Building Mgmt and Safety]
PDS[Packing and Dispatch]
GRS[Goods Receiving]
AW --> ASRS
AW --> AMR
AW --> WMS
AW --> MHC
AW --> RPS
AW --> BMS
AW --> PDS
AW --> GRS
ASRS --> SC[Mini-Load Crane]
ASRS --> HR[High-Density Racking]
ASRS --> CPS[Crane Position Sensing]
ASRS --> TF[Telescoping Fork]
ASRS --> AC[AS/RS Control System]
ASRS --> IO[I/O Conveyor Station]
AMR --> VP[AMR Vehicle Platform]
AMR --> FM[Fleet Management Server]
AMR --> NL[Navigation and Localization]
AMR --> PH[Payload Handling]
AMR --> SC2[Safety and Collision Avoidance]
AMR --> BC[Battery Management]
AMR --> WC[Wireless Comms]
WMS --> OP[Order Processing Engine]
WMS --> ID[Inventory Database]
WMS --> TA[Task Allocation Engine]
WMS --> ERP[ERP Gateway]
WMS --> RD[Dashboard Server]
RPS --> RA[Robotic Pick Arm]
RPS --> EG[End-Effector and Gripper]
RPS --> VI[Vision System]
RPS --> PP[Pick Planning Module]
RPS --> SE[Pick Cell Safety Enclosure]
Residual
The 9 orphaned architecture decisions are by nature design rationale records outside the derives/verifies trace model. No further action needed. The 4 lint findings are acknowledged as ontologically correct. Duplicate diagrams (ASRS, AMR Fleet, WMS, BMS each have 2 diagram shells) were created in prior sessions with no blocks populated — these are cosmetic artifacts with no engineering impact.
Next
The {{entity:Automated Warehouse}} decomposition is now complete with baseline COMPLETE-2026-03-17. The next session should select a new system from the seed list, maximising domain diversity away from Manufacturing (automated warehouse) and previously completed domains.