1. Product Data Management Implementation Guide
  2. Understanding Lead Time Calculations

Understanding Lead Time Calculations

You must generate lead times for MRP and CRP. The Leadtime Rollup program (R30822A) calculates planned level lead times for manufactured items and updates them in the Item Branch File table (F4102).

This program calculates:

  • Level lead time (if using manufacturing lead time quantity).

  • Manufacturing lead time.

  • Cumulative lead time.

  • Lead time per unit.

  • Total queue and move hours.

  • Setup hours.

When calculating the lead time per unit, you can set a processing option so that the number of employees or machines in the work center that you use to divide the run time in the routing by is set to 1. This value overrides the actual number of employees or machines in the work center.

Important: You cannot run this program in proof mode. It updates the records according to the processing options that you select. Changes to lead times affect the MRP and CRP. Run this program without any data selection and with no changes to data sequencing.