Cumulative Lead Time -MRP

Can you tell me, What is Cumulative Lead Time?. In MRP module, i can't use this function, althought i have already read help file.
Please explain for me!
Thank you!

Hi Tien Le ,
This MRP concept is best understood when you run the MRP by yourself and analyze. Let us perform a exercise
1. Create an item called as a Parent item (Make), Item A (Buy) and Item B (Buy), you will find 'make' and 'buy' in planning tab of item master data. don't forget to mark all three item as mrp in the same tab..!
2.Create a single level of BOM i.e. Parent item needs item A and Item B.
3.Create a sales order for parent item with qty as 1 date as on today and due date as on 15th of aug.
4.Create another sales order for parent item again with qty as 2 date as on today but now due date as on 20th of aug.
5. Now run MRP with start date as today and end date as on 15th aug. Consider only sales order and untick all others. Check the result and recommendations you will find no change in both.
6. Now run MRP again with start date as today and end date as on 15th aug. Consider only sales order and "Max. Cumulative Lead time = 5"
Now check the result and recommendation of MRP run you will find the difference and this difference is caused by cumulative lead time.
Result would be that the max cumulative lead time is the time limit that is added to your planning horizon.
Hope you understood.
Regards,
Aditya.

Similar Messages

Difference between Compute lead time and Rool up lead time

Hi All,
Could you please clarify what is difference between Compute Lead time and Roll up lead time.
I see in Routing > Tools.
Thanks in Advance
Regards
Ravi

Refer The Oracle document
Manufacturing Lead Time Computations
Manufacturing Lead Time Computations (Oracle Bills of Material Help)
Rolling Up Cumulative Lead Times
Rolling Up Cumulative Lead Times (Oracle Bills of Material Help)

Different Lead times for supplier in MRP calculation

Dear All,
We have different suppliers for a material. Different suppliers have different lead times and Min.lot size. Our requirement is when we run MRP system should suggest Pld.Order quantity for the supplier and also take lead time accordingly. I have done splits for suppliers by using Quata arrangement but system is only taking planned delivery time from material master record.
I also defined info records for the vendor and define lead time but still system is taking Pld delivery time from materials master.
Please help
Majid Ali khan.

Hi,
Go to OPPQ, enter your plant then click on External Procurement, there tick the check box Scheduling: Info Rec / Agreement.
This will ensure that the PDT is read from info-record if it exists.
Hope it clarifies.
Regards,
Vivek

Influence on lead time scheduling in MRP

Hello,
I am searching a possibility to influence the scheduling of planned orders, when they are created in the MRP run. There exists a BADI which is called when creating planned orders manually, but not in MRP. Its name is MD_PLDORD_SCHEDULING
Does anybody know about such an alternative for scheduling in MRP?
Thanks in advance
Roland Böhm

Hi,
During MRP run for single material by MD02 or on plant level by MDBT,
For MRP control parameters-
Scheduling take value as 2 - Lead time Scheduling and Capacity Planning.
and run the MRP.
With this you will get planned orders, and production rates are calculated as per time mentioned in routing.
But if you take scheduling value as 1 - Basic dates will be determined for planned order, then you system not consider lead time. Dates are picked from material master.
Srini

Is Oracle MRP efficient enough to reduce Inventory?Role of Lead time setups

Gurus,
I started understanding MRP these have the following questions,appreciate your inputs on below items
1)Does Item Lead time setups play a role in MRP?If Lead time setup is blank for all items,,does MRP work efficiently?
2)We just use MRP..not using any other inv rep. techniques like Min - Max etc.Our inventory is 3/4 times more than our monthsly revenues?exmaple our one month shipments are like 1 Mil.our inventory is like 4 Mil..Is it ok?how to reduce inventory?
3)how to improve our planning?
we are on 11i and discrete mfg.
thank you.

1)Does Item Lead time setups play a role in MRP?If Lead time setup is blank for all items,,does MRP work efficiently?
Lead times do play an important role in MRP. If lead times are blank, MRP will assume that all items can be procured / made in no time at all. The recommendations you get in MRP will be based on this incorrect assumption.
2)We just use MRP..not using any other inv rep. techniques like Min - Max etc.Our inventory is 3/4 times more than our monthsly revenues?exmaple our one month shipments are like 1 Mil.our inventory is like 4 Mil..Is it ok?how to reduce inventory?
Some companies have 52 inventory turns a year; some companies have 2. You are somewhere in between.There is no way for us to tell if you have too much inventory or too little. It highly depends on the industry you are in and on your business model. The best way is to compare yourself with other companies in the same market segment.
Inventory reduction is an art; not science. You can start looking at your excess and obsolete inventory and identifying patterns that lead to perceived excess. You can start looking at procurement practices. You can start analyzing MRP recommendations and acting upon them as required.
3)how to improve our planning?
You need to define what you mean by "improve". Oracle MRP is but a tool to improve planning. You need to implement a proper S&OP process to improve the planning component. You need to have a good review of your processes to "improve planning".
Sorry this is nebulous and may not help, but your question is quite generic.
Sandeep Gandhi
Independent Techno-functional Consultant

User exit or Badi for changing the lead time in ATP check in VA01/VA02

Hi All,
Currently, SAP standard functionality takes up the lead times maintained in material master to create the schedule lines in the sales order in VA01. I am looking for some user exiit/Badi/Enhancement point where I can change the lead time. This is somewhat urgent so any help in this regard is appreciated.
Regards,
Sandeep
Edited by: Sandeep Gaitonde on Sep 1, 2011 9:16 PM

Hi Sandeep,
These are the user exits will trigger in va01 .
SDTRM001 Reschedule schedule lines without a new ATP check
V45A0001 Determine alternative materials for product selection
V45A0002 Predefine sold-to party in sales document
V45A0003 Collector for customer function modulpool MV45A
V45A0004 Copy packing proposal
V45E0001 Update the purchase order from the sales order
V45E0002 Data transfer in procurement elements (PRreq., assembly)
V45L0001 SD component supplier processing (customer enhancements)
V45P0001 SD customer function for cross-company code sales
V45S0001 Update sales document from configuration
V45S0003 MRP-relevance for incomplete configuration
V45S0004 Effectivity type in sales order
V45W0001 SD Service Management: Forward Contract Data to Item
V46H0001 SD Customer functions for resource-related billing
V60F0001 SD Billing plan (customer enhancement) diff. to billing plan
Please check this and post .
Regards,
Madhu.

Purchase-How could I consider Transit time and lead time in imported mat.

My doubt refers about master data configuration of imported material.
My sittuation is :
Material - Lead Time: (depend on source)
Transit Time: (depend on source)
My company is responsable to transport all bought material. Besides, I can buy of differents suppliers.
Considering these rules, It s impossible to fix dates in material master, because material purchase is related with center and not with supplier. By the way, I need to discover other master data to configure it maybe : Inforecord, quotization... Whatever...
I need to correct this to generate Purchase order with dispatched date of my source against required date of my company after execute MRP.
I tried to study this scenario but until now I ve not got a solution.
Probably, you have had it before and can help me.
I hope your help!
Thank you!
Regards!

Create POs with respect to either PIRs (if you don't need to print out) or Contract/item, both of these are Vendor/material specific so you can set lead times accordingly . Probably best to use Source List and set requirement in material master too (Purchasing view).
Regards,
nick

Lead time calculation

Dear Gurus,
I want to calculate lead time between purchase order and goods receipt.how to do that???
Am having some doubts.
Does the lead time links with
Planned Delivery Time
Goods Receipt Processing Time
Purchasing Processing Time in material master. plz explain???

Hi,
If you create PR for a material, using MRP, then the planned delivery time would be picked up from the material master, please note that there is no source maintained yet in the PIR, so obviously that rules out planned delivery time of PIR and Vendor Master( even when u convert this P.R to P.O the planned delivery time will not change and will not be taken from the PIR)
Now if you directly create a P.O then the planned delivery time of the PIR is picked up , please note this difference.
I would recommend that you change the planned delivery time in the material, mnake it different from the planned delivery time of the PIR, and then run MRP, You will see that the planned delivery time in the PR would be based on the material planned delivery time.
Even if you assign source and convert this P.O using ME59 the PDT will not change.
Then you can try and create a P.O directly with the vendor, here you will notice that the PDT flows from the info record.
Please let me know if this addresses your concern.
Regarding your soure list issue, either you can remove the source list mandatory tick in MM or add the vendor whose PIR you are using into ME01, and it will definitely work.
Regards
Shailesh
Edited by: Shailesh Rajan on Jun 30, 2011 7:51 PM

Lead time for Purchase items

I had read that Lead time for Purchased items is calculated per 7 working days / week, by default. However, when I checked this, I found that the MRP planned orders were always considering our mfg calendar that has 5 working days / week.
Anyone tried this.

Industries & Product which have stabilsed have the same measuring yard and standards. This is also applicable for calendar working days, otherwise we need to device the 'interface' because the results would be weird, specifically when we speak of 'supply chain'.
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by erik anthonsen ([email protected]):
this is correct. it is up to individuals to change the amount of days that the company manufactures as their standard. if your facility is running 7 days a week-----use 7 days at setup<HR></BLOCKQUOTE>
null

Lead Time in Item Master

Hi
Does Lead Time in Item Master respect weekends and only count working days?
Meaning, for two weeks do I enter 10 or 14?
Thanks
Franz

Hi Franz
As far as I know, NO. You only have the option to include holidays in the MRP wizard itself which will then calculate against lead times. Best would be to test on a test database with both scenarios (with 10 or 14, and tick/untick holidays in MRP) and see what the results are.
According to the Online Help the above is correct:
Consider Holiday Table for Production Planning Factors in holidays and weekends in lead time calculation, as defined in the Holiday Details window. Holidays and weekends increase the lead time interval for MRP calculations.
Consider Holiday Table for Purchase Planning Factors in holidays and weekends in lead time calculations, as defined in the Holiday Details window. Holidays and weekends increase the lead time interval for MRP calculations.
Kind regards
Peter Juby

Lead time on purchase order

Hi all
For ordering spare parts, could you please confirm from where the lead time is picked up on the order ?
From the PIR or the material master ?
Thanks in advance!

It should take from the info record in case you are creating a PO.
for PR from MRP it comes from the Material master.
so for PO , Info record will be given first priority and If info record is not there then it will take from material master.
So calculation will be
Leadtime (Info record/ Mat.master) + GR processing time + Purchase processing time = Delivery date
Lead time is in calender days. GR processing time and Purchase processing time are working days.

LTP run ignoring GR processing time and Lead time

Hi,
I am trying to find out way to create a planning scenario (MS31) and run LTP (MS01) which will ignore the GR processing times and Lead times from Material master.
I would like to use MCEC report (after running MS70 valuation) which will show the values only in my new fiscal year - for budgeting purposes. Currently because of the long GR processing times and Lead times in material master (sometimes even 60 days) - some planned values show in MCEC report 2 or 3 months before the new fiscal year and the last two periods of new fiscla year are empty.
I would be grateful if you could help me with getting rid of these additional Times and adjusting the periods only for Report purpose. The desired final output should be that S012 table for this specific planning scenario has the values only in periods of the Fiscal year - without hitting previous Fiscal year last periods (due to lead /GR processing times).
Thank you,
Karol
Edited by: Karol on Oct 12, 2010 2:50 PM

Dear,
Master data is taken from normal MRP views. there is no other setting is available. you can create a different matrerial number for LTP planning.
Raj

Purchase requisition created only for the vendor lead time

Hello MRP experts,
I have a requirement that the purchase requisitions should be created by MRP only in the vendor lead time and rest of them should be in planned orders. Can this done and if so how. Thanks in Advance and due points will be awarded.

Hi,
As per my understanding there is no standard settings to achieve this requirement.
Regards,
Manish

Lead time scheduling problem

Dear Gurus,
When I run MRP using lead time scheduling, scheduling is not taking place for planed orders, the start and finished dates are the same. I have already maintained the required formula for the processing time in the work centers of the operations.
What could be the reasons please suggest....
Thanks in advance!
Nilesh

Hi,
Please check your control key active for scheduling?
Then check your scheduling parameter in OPU5 and OPU3 should active for scheduling?
Regards,
R.Brahmankar

Lead time for Item / Weekends

Hi
I am confused about the lead time to be entered for the item planning/MRP.
Do I include weekends when entering lead times in Items master data or not?
2 weeks = 10 days or 14 days?
In MRP I can select to respect Holidays. Does that also influence calculation of weekends as well or are weekends respected anyway?
Thanks
Franz

Hi Gordon,
Thanks.
My Holiday dates settings are:
- Weekend from Saturday to Sunday
- Ignore weekends for payments (but this is really for payments only and has no influence on MRP, I assume)
- The table lists holidays like easter or X-mas, only
As you said: This would mean that Item Master Lead time needs 'working days' to be entered.
If I get that straight, it is important to select to respect holidays in MRP with this setting. Otherwise the due dates for orders in recommendation report will end up too short/too close to the real date needed and a purchase order may be placed too late.
Franz

Cumulative Lead Time -MRP

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