This feature can help reduce the number of planned orders generated to supply a single sales order line when you are using Planning Optimization. When this feature is turned on, Planning Optimization will group all inventory transactions for an order line into a single requirement for the full quantity (which matches the built-in planning engine behavior). Supply and demand are grouped separately. This reduces the transaction volume when you have split transactions and when you use dimensions (such as batch numbers or serial numbers) that aren't coverage dimensions.