Approved Supplier List + SCAR for IATF 16949 §8.4.1

The ASL state machine enforces sign-off at every consequential transition. Attempting to approve or decertify a supplier without a valid signed authorization returns an error — the record cannot be in an unvalidated state. All signatures are immutable and timestamped.

SCAR workflow — AIAG 8D methodology

Supplier Corrective Action Requests follow the AIAG 8D discipline structure. Each of the eight disciplines (D1: Team, D2: Problem Description, D3: Containment, D4: Root Cause, D5: Chosen Corrective Action, D6: Implementation, D7: Systemic Prevention, D8: Closure) is a discrete workflow step with its own completion state and evidence fields.

The SCAR state machine enforces discipline prerequisites — you cannot advance to D5 without completing D4 root-cause analysis. This prevents the common pattern of "closing" a SCAR without demonstrating systemic correction.

SCAR severity classification

SCARs are classified by severity: Major (requires D1–D8 completion, formal closure signature) and Minor (streamlined workflow). Severity drives response-time SLAs configurable per tenant.

Cost recovery tracking

Each SCAR records costs associated with the supplier quality event: inspection costs, rework labor, scrap value, and expedite charges. Cost recovery requests are tracked against the SCAR with acceptance/rejection status. This data feeds supplier performance scoring and is exportable for charge-back reconciliation.

Supplier item performance

Every approved supplier has item-level qualification records linking a supplier to a specific part number with a qualified status. Incoming inspection requirements are configurable per supplier-item pair — sampling plan, inspection level, and release authority.

Regulatory mapping