When you USE Planning strategy 10, only PIR quantity is considered for MRP run and sales order are completely IGNORED. In this PIR requirement type LSF and is reduced when you deliver stock to customer.

When you use Planning strategy 40, for MRP run maximum of 2 PIR and Sales order can be considered and PIR is reduced when enter the Sales order. PIR requirement type is VSF in this CASE.

You use Planning strategy 20 for make to order MTO process and planning strategy 25 is used to produce product variants when there is request for VARIANT products from customer.

When you use Planning strategy 10, only PIR quantity is considered for MRP run and sales order are completely ignored. In this PIR requirement type LSF and is reduced when you deliver stock to customer.

When you use Planning strategy 40, for MRP run maximum of 2 PIR and Sales order can be considered and PIR is reduced when enter the Sales order. PIR requirement type is VSF in this case.

You use Planning strategy 20 for make to order MTO process and planning strategy 25 is used to produce product variants when there is request for variant products from customer.