Three-Tier Workshop Approval Workflow & Garage Release

Digital signature authorizations across requesting drivers, inspecting mechanics, and approving fleet managers before vehicle release from the workshop.

The Three-Tier Governance Workflow#

To ensure complete accountability and prevent unauthorized parts procurement or unsafe machinery operations, SmartERP implements a strict three-tier verification lifecycle on maintenance.repair:

sequenceDiagram
    autonumber
    actor Driver as Requesting Driver / Operator
    actor Mechanic as Workshop Inspector
    actor Manager as Fleet Operations Manager
    participant Ticket as maintenance.repair
    participant Vehicle as fleet.vehicle

    Driver->>Ticket: Step 1: user_request_by()
    Note over Ticket: Records requested_by, requested_date, and digital request_sign (State -> 'request')
    Mechanic->>Ticket: Step 2: employe_checked_by()
    Note over Ticket: Inspects vehicle, verifies faults, enters checked_by, checked_date & checked_sign (State -> 'checked')
    Manager->>Ticket: Step 3: employe_approved_by()
    Note over Ticket: Approves budget, enters approved_by, approved_date & approved_sign (State -> 'approved')
    Ticket->>Vehicle: Authorizes Garage Leave Date & marks vehicle Roadworthy

Digital Signature Integrity#

Each stage of the approval chain records the user's authentic identity and electronic signature:

Stage	Action Method	Required Signatory	State Transition
1. Request	`user_request_by()`	Assigned vehicle driver or equipment operator	`draft` $\rightarrow$ `request`
2. Inspection	`employe_checked_by()`	Chief mechanic or workshop quality inspector	`request` $\rightarrow$ `checked`
3. Authorization	`employe_approved_by()`	Head of fleet or technical director	`checked` $\rightarrow$ `approved`

Garage Release Gate#

Once the work order enters approved status:

The garage records the physical leave_date (departure timestamp).
Spare parts requisitions are posted against the general ledger inventory accounts.
The vehicle's status on the fleet dashboard transitions from In Maintenance back to Active Service.

Important

A vehicle cannot be dispatched from the central transport yard without an approved work order and a validated leave_date stamp. Security gatekeepers check the digital job card before lifting barrier gates.