Planners know one line well: "Definitely next Wednesday." Wednesday passes with no goods; Friday, then next week. Verbal dates are almost always optimistic—suppliers need orders; procurement needs to calm production. Stacked optimism on one material plan brings shortages at the busiest moments.
Promises are unreliable not because every supplier lies, but because history never corrects them. Who is usually on time, who slips two days, who fails only in peak season—these belong in planning, not emotion.
How Verbal Dates Destroy Plans
MRP expands by promised date; the shop schedules from the expansion. When promises drift, WIP, outsourcing, and overtime all replan. Replanning consumes person-days and builds a "plans are useless" reputation. Next time the floor trusts phone calls more than the plan.
Expediting everyone equally annoys reliable suppliers and hides the unreliable in the list. Without fulfillment rates, expediting has no focus—relationship cost stays high.
Change Three Things with Fulfillment Rates
- Calculate on-time and delay-day distributions per material-supplier pair; auto-add buffer or downgrade promised dates.
- Below-threshold suppliers: new orders require prepayment or smaller lots—not expediting alone.
- Available quantity shows both "promise" and "statistical adjustment" columns—meetings use adjustment only.
- Write fulfillment rates back to procurement KPI monthly—verbal praise no longer substitutes for data.
The XYN digital intelligence system can make receiving, promised dates, and delay statistics a configurable collaboration flow. Delivery must be credible—let history speak first. Without history in planning, phones never stop ringing.
