Fixed order quantity

If you use a fixed order quantity for a particular item, every order for that item will have the same order quantity. If you require a larger quantity, LN generates multiple orders for the same item and the same due date.

Example

Example 1: Reasonable values
Demand	2000
Fixed Order Quantity	100
Result	20 planned orders with quantity of 100

If you have a high volume demand and you choose a small fixed order quantity, LN generates many planned orders.

Example 2: Extreme values
Demand	100000
Fixed Order Quantity	10
Result	10000 planned orders with quantity of 10

To define a fixed order quantity for manufactured items, use the Fixed Order Quantity field in the Item - Ordering (tcibd2100m000) session.

To define a fixed order quantity for purchased items, use the Fixed Order Quantity field in the Item - Purchase Business Partner (tdipu0110m000) session.

The Plan Items - Optimized Lot Sizes (cprao3110m000) session calculates the optimal lot sizes.

During the planning process, LN stores the requirements and planned orders for each individual plan item in memory. If requirements are very large, but the lot sizes are very small, the planning run requires considerable performance.

Recommendations:

If you use a fixed order quantity, make the fixed order quantity sufficiently large. Take the expected volume for the item into account.
To calculate the optimal lot sizes, use the Plan Items - Optimized Lot Sizes (cprao3110m000) session.

Performance aspects

Effect on CPU: Yes
Effect on database growth: Yes