On-time delivery is simple to say and messy to measure. Capturing the data on dashboards and reviewing it regularly is the right way. But you must get the definition right before you build dashboards; choose whether on time means the promise date, the need-by date or the dock date.
In most plants, the need-by date tied to the operation works best because it reflects real scheduling. Define partials. Do you count on time in full only or do partials count? Document it and keep it consistent.
Then make data capture painless. Each receipt should scan the PO, the item, the quantity, the lot or heat if needed, and the actual date and time. If the supplier updated the promise date, record it so you can measure responsiveness, not just shipments.
Then track a short list of KPIs.
Start with on-time delivery percent and median days late.
Add on-time in full for critical items that can stop a line.
Watch promise date responsiveness so buyers see which vendors accept changes quickly.
Keep a simple defect rate tied to the PO so quality issues are part of the story.
These metrics tell you who protects your schedule and who puts it at risk. For a broader supply chain view and resilience ideas, explore NIST’s supply chain guidance at NIST MEP supply chain.
KPIs matter when they change daily work. Put supplier performance data where purchasing and production make decisions. In your ERP, tie each purchased component to its supplier with lead times that reflect actuals, not guesses. Let on-time delivery and days late roll into the planning messages so buyers see risk before it hits a workcenter.
When a vendor slips often, the system should suggest advancing POs or adding safety days for that item. When quality escapes rise, trigger an approval hold so incoming inspection checks the next three receipts. Make the impact visible to operations. Show planners which jobs will miss their start date because of late material. Tie supplier performance to rescheduling so everyone sees the cost of lateness. Keep screens simple at receiving with barcode transactions that post quickly and record traceability.
With clean data, your vendor scorecards become believable and useful. For practical purchasing tactics inside ERP, review the ERP Purchasing application and a quick read on better buying at this smarter purchasing decisions blog. To see how tight planning supports delivery, skim this blog about a manufacturer's win of 98 percent on-time delivery.
Suppliers improve when you coach with facts and agree on fixes. Share a one-page scorecard monthly that shows on-time delivery, days late, defects per 100 receipts and response time on promise dates. Highlight the three POs that hurt your plan the most so the story is concrete. Ask for a short corrective action focused on causes you can both influence like packaging, carrier choice or acknowledgment speed.
Recognize vendors who improve. Good news changes behavior faster than threats. Inside the plant, run a weekly material risk huddle. Review the top ten shortages or late risks, assign actions and post results in your ERP notes on the PO so the plan reflects reality. If a vendor continues to underperform, use your data to justify alternates or split awards. Keep finance in the loop by showing how supplier reliability affects overtime, expedites and late fees.
The goal is simple: cleaner data, faster feedback and steady coaching that turns vendor performance into a competitive edge.