Measure the share of supplier orders delivered both on time and in full, with separate timing and completeness rates.
Service level (OTIF) = Orders both on time and in full ÷ Total orders × 100
On-time and in-full rates are also calculated separately.
This service level uses the on-time-in-full definition. It shows how reliably supplier orders meet both date and quantity requirements in the same reporting period.
Use one documented definition of “on time” and “in full” across periods. Separate counts cannot reveal the overlap, so OTIF must be entered directly.
For 100 orders, 94 on time, 96 in full, and 91 meeting both conditions, service level is 91.0%. Nine orders miss OTIF.
OTIF prevents an order that meets only the date or only the quantity requirement from being counted as fully successful.
No. The both-condition count cannot exceed either the on-time count or the in-full count.
Use a documented policy. Exclude them only when the same exclusion is applied consistently to every period.
Count them as in full only if they satisfy the quantity rule your organization defined before measurement.
Those totals do not show how many individual orders belong to both groups, so the overlap must be known.
| Variable | Meaning |
|---|---|
| Total orders | All eligible orders in the period. |
| On time | Orders meeting the documented date rule. |
| In full | Orders meeting the documented quantity rule. |
| OTIF orders | Orders meeting both rules. |