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   To define and update the enable dates and default parameters:

1. Navigate to the Planning Parameters window.

2. Check Snapshot Lock Tables to lock tables during the snapshot process to ensure consistent inventory on-hand quantities and order quantities.

Note: It is not necessary to check this box when running the Memory-based Planning Engine. However, you may still wish to check this box for absolute data consistency.

3. Enter a Default ABC Assignment Group to use as the default for items. See: ABC Assignment Groups.

4. Save your work.

   To enter execution defaults:

1. Navigate to the Planning Parameters window.

2. Check Demand Time Fence Control to consider any demand from forecasts within the demand time fence.

The planning process does not consider any demand from forecasts within the demand time fence, but does consider demand from sales orders.

3. Check Plan Safety Stock to calculate the safety stock for each item.

Attention: You must enter safety stock information for your items before Oracle Master Scheduling/MRP calculates safety stock for the items. See: Defining Items.

4. Check Net Purchases to consider approved purchase orders, approved purchase requisitions, in-transit shipments, purchase orders in receiving, and internal requisitions when planning an item.

If you do not check this, the planning process does not recommend the rescheduling of purchase orders, and may over plan the item because it creates additional planned orders.

5. Check Planning Time Fence Control to indicate whether the planning process violates planning time fences for items.

If you do not check this, the planning process plans the items as if no planning time fences exist.

• For discrete items, the planning process does not create planned orders or recommend rescheduling in existing orders within the planning time fence of the item. The planning process can still recommend rescheduling orders out.

• For repetitive items, the planning process can vary the suggested schedule from the optimal schedule, within the planning time fence, by the acceptable rate increase and/or decrease you specified for the item.

6. Check Net WIP to consider standard discrete jobs, non-standard discrete jobs, or repetitive schedules when planning an item.

If you do not check this, the planning process does not recommend rescheduling of work orders, and may over plan the item because it creates additional planned orders.

7. Check Net Reservations to consider material reservations when planning an item.

If you do not check this, the planning process does not consider material reservations for the item and may consider the on-hand quantity for the item available for any demand.

8. Select a Material Scheduling Method:

Operation start date: Schedule material to arrive in inventory for availability on the start date of a specific operation in the manufacturing process.

Order start date: Schedule material to arrive in inventory for availability on the work in process order start date.

9. Select the planned items or components to be included in the planning process. See: Specifying Items for the Planning Process.

Supply Chain Planning users can set additional parameters in the Plan Options window. See: Specifying Items for the Supply Chain Planning Process.

All planned items

Demand schedule items

Supply schedule items

10. Enter a number of days before the current date to include past due MDS demand in Include MDS Days. If you do not enter a value, the planning process considers all past due MDS demand. If you enter zero, the planning process ignores all past due MDS demand.

11. Save your work.

   To assign and update repetitive planning parameters and other repetitive planning defaults:

1. Navigate to the Planning Parameters window.

2. Select the type of dates you want to use:

Work dates: Calculate the repetitive planning periods using workdays. This allows the periods to shift out due to holidays. If a start date falls on a holiday, the start date is changed to the next valid working day. Each repetitive planning period consists only of valid working days.

Calendar dates: Calculate the repetitive planning periods using calendar days. This allows you to fix the length of the periods regardless of the timing of holidays (non-workdays). A repetitive planning period can start on a holiday and include holidays.

3. Enter an Anchor Date from which to calculate the repetitive planning periods.

If, during the planning process, you change the repetitive planning anchor date, this date is updated to the start date of the first repetitive planning period.

4. Enter the number of workdays for the first repetitive bucket in First Bucket Days.

For example, you might enter 5 to signify that the first repetitive planning horizon is grouped into "buckets" of 5 days.

5. Enter the number of workdays for the first repetitive horizon in First Horizon.

For example, you might enter 30 to signify the first 30 days of production are grouped into the first repetitive bucket size you specify.

6. Enter the number of workdays for the second repetitive bucket in Second Bucket Days.

For example, you might enter 10 to signify that the second repetitive planning horizon is grouped into "buckets" of 10 days.

7. Enter the number of workdays for the second repetitive horizon in Second Horizon.

For example, you might enter 60 to signify the next 60 days of production are grouped into the second repetitive bucket size you specify.

8. Enter the number of workdays for the third repetitive bucket in Third Bucket Days.

For example, you might enter 40 to signify that the rest of the repetitive planning horizon production is grouped into "buckets" of 40 days.

9. Save your work.

See Also

Overview of Material Requirements Planning

Setting Up Project MRP in Master Scheduling/MRP and Supply Chain Planning