Define a Time Window for Plan Pegging Calculations

Planning cycle times depend on the volume of data that you want to evaluate and the complexity of the calculations that you want to perform. One time-consuming aspect of a plan run is the generation of the pegging data for the supply plan.

In some manufacturing and distribution environments, pegging information outside a near-term horizon isn't used to make business decisions, so it might not be necessary to calculate that data. You can configure how much of the plan horizon for which to generate full pegging. The planning process calculates pegging for all end demands with bucketed due dates that fall on or before the defined time window. The planning process doesn't generate pegging data outside the horizon. The Number of Days to Calculate Pegging field is available for constrained and unconstrained supply plans or demand and supply plans.

For example, you set the Number of Days to Calculate Pegging to 10 days. The planning process calculates all end demands with bucketed due dates that fall on or before Day 10. The planning process doesn't calculate any pegging on Day 11 or later. This parameter only impacts generation and display of pegging and not the demand and supply netting, which occurs as usual for the entire plan horizon.

Steps to Enable Pegging Calculations for a Time Window

Follow these steps to enable pegging calculations for a time window.

1. In the Supply Planning or Demand and Supply work area, open a supply plan or a demand and supply plan. The supply plan can be constrained or unconstrained.

2. In an open plan, click Actions and then select Edit Plan Options.

3. On the Edit Plan Options page, click the Supply tab.

4. On the Edit Plan Options page, Supply tab, click the Select Advanced Options button.

5. In the Supply: Advanced Options dialog box, Pegging Parameters section, specify a value in the Number of Days to Calculate Pegging field to define the demand window for pegging calculations. This value is the number of days from the plan start date that the planning process calculates the pegging relationship between demands and supplies.

Tips and Considerations

You should consider the extent of impact on planning output when you select a value for the Number of Days to Calculate Pegging parameter. Here are some things to consider when you use this pegging parameter:

• For all existing plans and any copy of these plans, the planning process continues to calculate the pegging for the full plan unless you update the Number of Days to Calculate Pegging plan option.

• You can use the pegging parameter for all demand types except reservations in an unconstrained supply plan.

• In addition to the Pegged Quantity, these order attributes that rely on pegging aren't calculated for all demand and supplies not pegged to end demands inside the new demand window:

  • Quantity by Due Date

  • Material Available Date

  • Planned Arrival Date

  • Planned Ship Date

  • Days Late

  • Contributes to Demand Lateness

  • Contributes to Overload

  • Shared Supply Pegged to Firm

  The Supplies and Demands and Gantt Chart views won't show values for these attributes for orders that don't meet the criterion.

• The Demand Fulfillment table won't show expedite or capacity recommendations for demands outside the time window.

Pegging Related Exceptions

The planning process doesn't calculate these exceptions, which rely on pegging, for demands and supplies not pegged to end demands inside the new demand window:

• Late Supply Pegged for Forecast

• Late Supply Pegged to Sales Order

• Demand at Risk due to Material Shortage

• Demand at Risk due to Resource Shortage

• Demand at Risk due to Supplier Capacity Shortage

• Demand at Risk due to Insufficient Lead Time

The Exceptions table won't show these exceptions for supplies and demands that don't meet the criterion.