What's the Difference Between Lead Time & Planning Lead Time?

What's the Difference Between Lead Time & Planning Lead Time?

Q - We're in the process of using ATP and noticed on the Item File that there are two fields: one is Lead Time and the other is Planning Lead Time. We checked the documentation and it looks like Planning Lead Time is used in any MRP generation, but is that the only difference between the two? The client asked and we realized we weren't exactly sure what each field was specifically used for, so can you please explain?





A - Typically, we suggest that you keep Lead Time and Planning Lead Time as the same value. Here is the difference between these two fields:

(A) Field # 84 Planning Lead Time is used to:

  1. Support ATP / MRP Generation.  Please be aware that MRP (Material Requirement Planning) is a legacy manufacturing module to be replaced by the ATP (Available to Promise) feature.
  2. Production Work Order – Based on Planning Lead to calculate “Starting Date” from “Due Date” as it is entered by the user.
(B) Field # 45 Lead Time is used as:
  1. Factor in “Recalculate Reorder Field” processing. The system needs to reserve a higher Reorder Level for a longer lead time item. 
  2. Lead time showing on Reordering Advised Report.
(C) The system will suggest setting Lead Time and Planning Lead Time as the same in normal situations. The system will issue the message “Would You Like to Update Planning Lead Time Too?” as soon as you update “Lead Time.” See sample screen below:


Also, see the following related Knowledge Base article:

EMK:





    • Related Articles

    • Feature - Synchronize Item Lead Time and Planning Lead Time

      Release Date: 7/31/24 Version: 8.5 and Above In Item Master File Maintenance, there are two lead time fields: Screen 2 - Field 45. Lead Time: This is a field used by the Inventory Management module like Reorder Advise Report and Usage Exception ...

    • Planning Lead Time by Calendar Days or Work Days?

      Q - When planning lead time in Elliott's Item Master table, is it by calendar days or working days? If it is by calendar day, then how do you prevent the planning lead time from falling on weekends and holidays? A - Elliott uses calendar days for ...

    • Why Isn't Planning Lead Time Based on Work Days?

      Release Date: 11/8/2018 Q - I saw your Knowledge Base article that explains how the planning lead time is based on calendar days: https://support.netcellent.com/portal/en/kb/articles/planning-lead-time-by-calendar-days-or-work-days But since you have ...

    • Feature - Order Line Item Screen to Prompt WO Type, Buffer Days and Lead Time

      Release Date - 4/8/16 The purpose of the feature is to allow the user to specify what type of production order should be created when entering a line item in Customer Order Processing. Users will also be able to specify the buffer days and lead time. ...

    • Feature - Buyer's Desk Avg DOS Range and Lead Time Filter Criteria

      Release Date: 9/10/24 Revised Date: 10/14/24 Version: 8.5 and Above This feature added a new filter criteria to the two-location version of Buyer's Desk. The option "Starting/Ending Lead Time" allows the user to choose if items should be filtered ...