ERP & MRP Planning worked example

Production Promise Date with order queue before start of 13 days: a worked example

This scenario runs the production promise date calculation on the strong side: order queue before start of 13 days, with every other input held at its documented default. customer service needs a realistic production promise offset

The inputs for this scenario

  • Order queue before start: 13 days (raised for this scenario; the documented default is 5)
  • Manufacturing execution time: 8 days (unchanged)
  • Quality, paperwork, and release time: 2 days (unchanged)
  • Shipment and promise buffer: 3 days (unchanged)

Working through the calculation

  • Applying the documented formula (Promise-date offset = queue time + manufacturing time + quality/release time + shipment buffer) to the inputs above produces each figure below.
  • At this operating point the engine returns 26 days for production promise-date offset, the number this scenario is built around.
  • At this operating point the engine returns 13 days for order queue before start.
  • At this operating point the engine returns 8 days for manufacturing execution time.
  • At this operating point the engine returns 5 days for quality release and shipment buffer.

How this compares with the baseline

  • Against the tool's baseline example, where order queue before start sits at 5 days and the headline result is 18 days, this scenario comes in 44.44% above the baseline at 26 days.
  • Use it whenever quoting a delivery date or recalculating a promise after queue depth or shop load changes. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Production promise-date offset: 26 days (headline result)
  • Order queue before start: 13 days
  • Manufacturing execution time: 8 days
  • Quality release and shipment buffer: 5 days

Run it with your numbers

  • Every input above is editable in the live Production Promise Date calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.