Background
A Tier-1 automotive components manufacturer supplying to four OEMs needed ISO 9001:2015 and IATF 16949 compliance across its supply chain. With 218 active suppliers across India, Germany, and Thailand, its annual supplier audit programme had become logistically unmanageable: 14-week lead times to schedule audits, evidence arriving by email attachment, and findings tracked in a master spreadsheet updated by one person.
The Challenge
The manufacturer’s quality team identified three critical gaps:
- Visibility lag: supplier non-conformances discovered during annual audits were 6–12 months old by the time corrective actions were tracked
- Evidence integrity: supplier-submitted evidence had no chain of custody — files could be modified after submission
- Corrective action closure: 34% of corrective action plans (CAPAs) from the previous year were still open 12 months after the audit
The Solution
AUDITDEX’s Data Request List (DRL) workflow was configured as the primary interface between the manufacturer’s quality team and its supplier base.
Supplier Portal: Each of the 218 suppliers received a unique login to the AUDITDEX portal. Evidence submission deadlines were configured per supplier tier (Tier A: 30 days, Tier B: 45 days). Automated reminders sent at 14 days, 7 days, and day-of deadline.
Immutable Evidence Storage: All supplier-submitted files timestamped and SHA-256 hashed on receipt. Any modification to submitted evidence triggers an alert and creates a new version — the original is preserved.
CAPA Workflow: Corrective actions generated from audit findings assigned directly in AUDITDEX to supplier contacts with due dates. Escalation rules configured: overdue CAPAs escalate to the supplier’s management representative at 30 days, to the manufacturer’s procurement lead at 60 days.
Results
| Metric | Before | After |
|---|---|---|
| Supplier audit scheduling lead time | 14 weeks | 3 weeks |
| Evidence collection per supplier | 3–4 weeks | 5–7 days |
| CAPA closure rate (12-month) | 66% | 91% |
| Audit findings identified in-year | 43% | 89% |
Strategic Impact
The shift from annual point-in-time audits to continuous monitoring changed the relationship between the quality team and the supply base. Suppliers began treating compliance as an ongoing operational requirement rather than an annual exercise. Two OEM customers noted the improvement during their own supplier audits of the manufacturer and cited it as a model for their broader supplier development programmes.