Vendor lead-time performance
The Lead-time performance tab compares a vendor's claimed lead time against how long deliveries actually take, built from received POs.
The Lead-time performance tab tells you whether a supplier delivers when they say they will. It's built from real received POs, so it reflects what happened, not what was promised.

What does it show?
- Claimed lead time — the days you entered on the vendor record.
- Empirical avg — the average lead time measured from received POs over the last 365 days.
- Delta (actual − claimed) — a positive figure, shown in red, means the vendor runs later than promised.
- A delivery distribution splitting POs into On time, Late and Very late, plus an overall on-time rate.
Why is the tab empty?
A vendor needs at least 3 received POs in the last year before metrics appear. Until then you'll see “No performance data yet”. The figures recompute nightly, so today's receipt shows up tomorrow.
Tip. A consistently positive delta is a signal to pad your reorder timing or renegotiate the promised lead time.