If designated a critical supplier, undergo an RBA-certified third-party audit at least every three years and close corrective actions.

When it applies

Critical suppliers (top 85% of purchasing expenses, single-source, or designated critical by TSMC after assessing risk indicators such as market share and inventory levels).

Evidence you'd show

Audit report

How often

Every three years

If it isn't met

Must propose an improvement plan and schedule; TSMC S.H.A.R.P. Team guidance and a re-audit to confirm previous findings are closed.