MRP types and Service level factor
can anybody please exaplain me in detail the difference between different MRP types like PD, VB, VM and P3 and also the effect and importance of Service level factor or the risk factor or alpha factor.
Mohit Sharma replied
PD : Mrp planning. explote the BOM upto last level and create the planned oder from finish product level to raw material level
MO : Master schedling planning : the BOM upto next level of the final product.so create the planned order for the final product and create depended reqmt for the next level material
MRp Type P1 or M1:
Ans: THe order proposal that lies within the planning time fence is firmed automatically as soon as its date lies at least one day before the finish date of the planning time fence. The date of new order proposals that are actually created in the planning time fence are rescheduled out to the end of the planning time fence. Therefore, these new order proposals are not firmed
MRP type P2 or M2:
Ans: An order proposal that lies within the planning time fence is automatically firmed as soon as its date lies at least one day before the end of the planning time fence. The system does not create any new order proposals within the planning time fence. That is, the shortage situation is not adjusted within the planning time fence.
MRP type P3 or M3:
Ans: Order proposals that lie within the planning time fence are not firmed automatically. The order proposals required to cover the requirements are moved to the end of the planning time fence
MRP type P4 or M4:
Within the planning time fence, the system creates no order proposals automatically. That is, the shortage situation is not adjusted within the planning time fence.
M4 is to classify the MS parts and P4 is for normal MRP items. BOm will be exploded in both cases to lower levels if procurement proposals created within or outside the time fence.
VB/VM - here , the system do not consider the reqmt (pir or sales order ) , it check the reorder level in the material master and create the planned orde / pr once the stock reach the level.
ND : no planning . so the material will not be consider for planning
XO : If you are going to do MRP planning the external . say APO or other you can use this type of mrp
For More details: