CPSP: Supplier Relationship Management

Supplier Relationship Management tests how you segment a supply base, govern the relationships that matter, measure performance with metrics that survive scrutiny, and exit cleanly when a relationship no longer fits.

Segmentation and governance

• Segment by value and risk: strategic, collaborative, transactional and bottleneck suppliers each get a different cadence.
• Governance elements: named executive sponsor, defined contacts on both sides, an escalation matrix, quarterly business reviews, and a joint scorecard agreed with the supplier.
• Relationship lifecycle runs from selection through onboarding, performance management, development, and exit or transition.

Measuring performance

• OTIF is measured at order level: an order counts only if it is both on time and in full.
• Supporting metrics: parts per million defects, responsiveness, invoice accuracy, innovation pipeline, savings delivered and verified.
• A scorecard needs a consequence: a development plan, volume shift, or a managed exit. Otherwise it is reporting theatre.

Worked example

A supplier received 200 purchase orders. On-time delivery was 180 orders (90%) and in-full delivery was 190 orders (95%). Only 175 orders were both on time and complete.

• Correct OTIF: 175 / 200 = 87.5%.
• Averaging the two rates gives 92.5%, which overstates performance. The reasoning: the average hides orders that were late but complete, and orders that were on time but short. Since 25 orders failed at least one condition (200 minus 175), and averaging counts overlapping failures twice in the wrong direction, only the order-level calculation reflects the customer's actual experience. Report that number to the business, not the flattering one.

Supplier development and exit

• Development programs fit strategic and bottleneck suppliers with a capability gap; gain-sharing arrangements reward joint cost reduction.
• Any sole-source strategic supplier needs a documented transition or exit plan, tested periodically.

Traps

• Running scorecards that produce no decision.
• Judging relationship health only by satisfaction surveys rather than operational data.
• Applying an identical review cadence to a 50M strategic supplier and a 20k stationery vendor.
• Letting quarterly reviews become status meetings with no agenda, actions or owners.
• Having no exit plan for a supplier the business cannot quickly replace.