41 Overview to MRP Multi-Facility Scheduling

This chapter contains these topics:

41.1 Objectives

  • To understand key MRP multi-facility scheduling concepts

  • To define supply and demand relationships among your branch/plants

  • To use the branch relationships chart to review your supply and demand relationships in a graphical hierarchical format

  • To generate a multi-facility requirements plan

  • To review the time series for the multi-facility requirements plan

  • To review and process transfer messages for the multi-facility requirements plan

41.2 About MRP Multi-Facility Scheduling

In an MRP multi-facility operation, planned orders at the demand facility are the source of demand at the supply facility. You set up and maintain multi-facility schedules to:

  • Manage the movement of component material through multiple production facilities

  • Use assembly lines at one plant to begin the assembly of a product and a different plant for final assembly

  • Handle all resupply movements throughout the manufacturing network

  • Formalize the processing of transfer items among your manufacturing plants

  • Create internal transfer orders to help ensure traceability of material and their costs between facilities

  • Ensure that the branch from which you are ordering has enough inventory in stock to fill the order, or schedule the supply plant to produce it

  • Schedule production according to realistic time frames

You can define facility relationships at any level of detail for an entire facility, a product group, master planning family, or an individual item number. In addition, you can incorporate all your facilities into a single planning schedule.

In MRP, the system transfers items among your manufacturing plants at the component level. The system transfers component items by:

  • Generating a purchase order at the demand plant for the supply plant

  • Generating a sales order from the demand plant at the supply plant

In the following example, the demand plant (M55) receives components from three different supply plants. Supply plants can also manufacture the end deliverable item.

Figure 41-1 Supply/Demand Plants

Description of Figure 41-1 follows
Description of "Figure 41-1 Supply/Demand Plants"

A breakdown of the percent received from each supply branch/plant indicates that M55 satisfies 80 percent of its required demands from the three supply branch/plants. In this case, the demand plant assembly also supplies the remaining 20 percent of the end item.

MRP multi-facility scheduling consists of the following tasks:

  • Setting up multi-facility requirements plans

  • Generating multi-facility requirements plans

  • Working with MRP multi-facility planning output

The system records MRP multi-facility information in the following tables:

Table Description
Bill of Materials Master (F3002) Contains warehouse or plant level information about bills of material, such as costs and quantities of components, features and options, and levels of detail for each bill.
Branch Relationships Master (F3403) Contains the supply and demand relationships among the branches.
Forecast Consumption Periods (F3405) Contains the periods that you defined on the Forecast Consumption Periods screen.
MPS/MRP/DRP Lower Level Requirements (F3412) Contains the source of gross requirements that are required to build parent items.
Item Master (F4101) Contains basic information about each item that has been defined in inventory, such as item numbers, description, alpha description, category codes, and units of measure.
Item Branch (F4102) Contains warehouse or plant level information, such as costs, quantities, physical location, and branch level category codes.
MPS/MRP/DRP Detail Message Review (F3411) Contains the action messages generated when you run a Master Production Schedule, Material Requirements Plan or Distribution Requirements Plan.