New lot-sizing procedure (similar FX fixed order quantity)
Dear All,
I have to create a new lot sizing procedure for MRP run. This new procedure should be similar to FX - the material should be included in MRP run when the stock falls below reorder point - but the quantity ordered (proposed to be ordered in PReq) should be the fixed lot size no matter which is the difference between the reorder point and the stock.
To clarify the request: the reorder point is 70, the stock level is 15 and the fixed lot size is 25. The MRP run should create 1 PReq for 25. (The standard functionality of FX lot sizing creates 3 PReq for 25 pieces each one - because the needed quantity is 55.)
If there is no standard customization to be done, I think I should do some changes in the needed quantity (set the quantity 25 instead of 55) - but I need yours advice also about the best way to do this. Maybe you may indicate an exit/BADI or a place where I can do an enhancement to achieve this.
I now it is not the best request - but I have to do it, unfortunately .
Regards,
Florina R.
Hi Tomasz,
1) The reorder point is 70 (greater than the needed quantity for a week) because the vendor has some delivery problems and also because this quantity covers the delivery lead time.
2) The lot size is fixed because they do not want to order more than the needed quantity for a week even if the difference between the reorder point and the stock level is greater than 25.
I'm able to fix the lot size but not to limit the quantity at this value (25).
I have to do this because they will provide the needed quantity (if the stock falls to 0) from another vendor (but the tricky thing and wrong also is the fact that for the second vendor I have a second material....).
It is hard for me to convince you that the request is correct because I know in this way SAP will work incorrectly - but the client knows the consequences and even so wants this kind of lot sizing procedure...
Regards,
Florina R.
Similar Messages
-
Ordering costs For Optimum Lot sizing Procedure
Hello Gurus,
What does ordering costs mean.I am unable to conclude from SAP Library
how to arrive at these costs.I could understand the logic behind using
these costs and getting the optimum lotsize.Kindly help me in understanding
the ordering costs.
Thanks in advance,
S.nandhakumar
Message was edited by:
S Nanda KumarHello Nanda,
Ordering costs is sum of transport cost and storage cost for a component.
In transport cost you can include all purchasing cost and you have maintained this in MRP view in the field of "ordering costs".
Storage cost you have maninatined in percentage in customizing in lot sizing procedure.
This will be picked up automatically with optimum lot sizing procedure to create a optimum lot size.
Please rewards your points if helpful and let me know anything more you would like to know.
Regards
TAJUDDIN -
Hi Experts,
Can anybody please explain difference between following lot-sizing procedures.
static lot-sizing procedures
period lot-sizing procedures
optimum lot-sizing procedures
It will very much helpful if explain with example. Will appreciate with deserving point.Dear Raja,
Pls. find details about Lot Sizing Procedures :
Static Lot-Sizing Procedures
Use
In static lot-sizing procedures, the procurement quantity is calculated exclusively by means of the quantity specifications entered in the material master.
Features
The following static lot-sizing procedures are available:
Lot-for-lot order quantity
Fixed lot size
Fixed lot size with splitting and overlapping
Replenishment up to maximum stock level
Period Lot-Sizing Procedures
Use
In period lot-sizing procedures, the system groups several requirements within a time interval together to form a lot.
Features
You can define the following periods:
days
weeks
months
periods of flexible length equal to posting periods
freely definable periods according to a planning calendar
The system can interpret the period start of the planning calendar as the availability date or as the delivery date.
Splitting and overlapping are also possible for all period lot-sizing procedures
The system sets the availability date for period lot-sizing procedures to the first requirements date of the period. However, you can also define that the availability date is at the beginning or end of the period.
Optimum Lot-Sizing Procedures
Use
In static and period lot-sizing procedures, the costs resulting from stockkeeping, from the setup procedures or from purchasing are not taken into consideration. The aim of optimum lot-sizing procedures, on the other hand, is to group shortages together in such a way that costs are minimized. These costs include lot size independent costs (setup or order costs) and storage costs.
Taking Purchasing as an example, the following problem hereby arises:
If you order often, you will have low storage costs but high order costs due to the high number of orders. If you only seldom place orders then you will find that your order costs remain very low, but your storage costs will be very high since warehouse stock must be large enough to cover requirements for a much longer period.
Features
The starting point for lot sizing is the first material shortage date that is determined during the net requirements calculation. The shortage quantity determined here represents the minimum order quantity. The system then adds successive shortage quantities to this lot size until, by means of the particular cost criterion, optimum costs have been established.
The only differences between the various optimum lot-sizing procedures are the cost criteria. The following procedures are available:
Part Period Balancing
Least Unit Cost Procedure
Dynamic Lot Size Creation
Groff Reorder Procedure
Hope this helps.
Regards,
Tejas -
Can some provide a list of the SAP supplied lot sizing procedures. The value and description would be fine.
Such as EX - Lot for Lot.
Thanks
Edited by: WILLIAM GETZ on Mar 27, 2008 1:42 PMHi,
The lot sizes are maintained in transaction OMI4.
The following are a few standard lot sizes,
ES - Lot-for-lot order quantity w. splitting,
FX - Fixed order quantity
FS - Fixing and splitting
GR - Groff reorder procedure
HB - Replenish to maximum stock level
MB - Monthly lot size
TB - Daily lot size
WB - Weekly lot size
Please inform if you need any specific information about the lot sizes.
Regards,
Senthilkumar -
Hi experts,
When we use lot-sizing procedures PK, I have a problem about it.
Can you please kindly help me.
The problem is.
When we run MRP and get the release date as past date in purchase requisition.
I would not like system to propose release date as past date.
Do we need more configuration for using lot-sizing procedures PK ?
The settings are mentioned as below.
* material master
- Lot size in MRP1 view : PK
- MRP Type in MRP1 view : PD
- Procurement type in MRP2 view : F
* MRP parameters
- Processing key : NETCH
- Create purchase req. : 1 (Purchase requisitions)
- Delivery schedules : 3 (Schedule lines)
- Create MRP list : 1 (MRP list)
- Planning mode : 1 (Adapt planning data (normal mode))
- Scheduling : 2 (Lead Time Scheduling and Capacity Planning)please read below for the detail explanation of the release date.
please check the example part of below.
wish it help.
tks.
Purchase Requisition Release Date
Specifies the date on which the purchase order
should be initiated on the basis of the purchase
requisition.
The release date is based on:
The
purchasing department processing time defined for the plant
The
planned delivery time from the material
master record or purchasing
info record
The
delivery date
The
goods receipt processing time from the material master record
Note
The planned delivery time from the
purchasing info record and the GR processing time are only taken into account
if the purchase requisition was generated via materials
planning.
Example
Processing time Planned del. GR processing
Purchasing time time
|----------|---------------------|--------|
Release PO Delivery Date
date date date required
Date required: 01.10.2007
GR processing time: 2 days (working days)
Planned delivery time: 10 days (calendar days)
Purchasing dept processing time: 2 days (working days)
For the material to be available on the
date it is needed, the purchase requisition must be released on 13.09.2007
(requirement date less GR processing time, planned delivery time, and
purchasing department processing time). -
No. of POs per year
Purchase Cost
Storage Cost (20 %)
Total Cost
Purchase Value
Purchase Quantity
1
800,000
2,400,000,000
2,400,800,000
120,000,000
1200
2
160,000
13,200,000
14,800,000
60,000,000
600
3
240,000
8,800,000
11,200,000
40,000,000
400
4
3,200,000
6,600,000
9,800,000
30,000,000
300
5
4,000,000
5,280,000
9,280,000
24,000,000
240
6
4,800,000
4,400,000
9,200,000
20,000,000
200
7
5,600,000
3,771,429
9,371,429
17,142,857
171
8
6,400,000
3,300,000
9,700,000
15,000,000
150
Hi All,
I need total requirements of 1200 EA around the year from a specific material, if i issue one PO per year for total quantity of 1200 the total cost will be as shown above, if i issue two POs (one PO every 6 months with total quantity of 600) the total cost will be as shown above, the optimum quantity is 200 and 6 POs (one PO every 2 months with total quantity of 200) as the cost will be at its minimum.
Line no. 6: the optimum quantity that should be suggested by MRP run is 200 EA as the total cost is 9,200,000 (the lowest cost).
I want to use dynamic reorder point (MRP type V2) and dynamic lot size(DY) in MRP1 view i choose MRP type V2, Lot size DY,Reorder Point 300, Safety Stock 100, Ordering Cost 800,000 and Storage Cost ind. 1 ( represent 20%) but when i save the material the system issue the below message:
MRP type V2 requires forecasting data to be maintained so please help me to understand which data i have to maintain to use optimum lot sizing procedure to meet the above requirements.
If you could help me with an example and screenshot i'd be grateful. Thanks in advance.Hi,
Do refer the below wiki Link it will help you understand more about Lot sizing procedure..
Lot sizing procedure calculation - Adobe Interactive Forms (Japanese) - SCN Wiki -
Multiple PR's being created even though the Lot Sizing procedure is WB.
The issue is system is creating more than one PR every week even though the lot sizing procedure is WB. The MRP type of the material is P3 and planning time fence is 21 days. The PR's created have the date of every week's Monday. There's also a quota arrangement for the material having two vendors, so two PR's both having different vendors are ok but system is creating multiple PR's for same vendor on same date.
Do let me know if anything else you want to know to understand this issue.
We want system to create only one PR per week for a vendor.
Thanks,
Rakesh.Hi,
First thing theres a lot size WB
What is the qty of the PR have u maintianined any min lot sice or max lot size.
Coming to quota arrangement how did u maintained it
For eg
You might have maintained for a vendor 1 maximum qty as 100 and u have raised a request for 200 so it is raising two prs
Check u r quota arrangement once
Reagrds
sravanthi -
Hello
Why it is said that "Periodic lot sizing procedure is suitable for forecast based planning"?
Also please tell what is use of Subsequent settlement indicator in vendor master record?
Thanks & Regards
P.S.PHi
Sub seq settlement Indicates that conditions providing for subsequent settlement may apply to this vendor.
Set this indicator if subsequent (end-of-period) settlement can be agreed with this vendor.
Vijay -
Fixed Days Supply & Fixed Order Quantity
Hi,
in certain cases we use the Fixed Days Supply & Fixed Order Quantity attributes in the Item Master to influence our ASCP plan calculation (size of planned orders etc.)
We need this because we do discrete production (semiconductor industry) and with the fixed order quantity we to ensure that the system plans with full Lots.
However I am not sure what the impact of the Fixed Days Supply is, especially in combination with the Fixed Order Quantity.
Unfortunatly the Manuals do not tell very much about this. Does anyone have experience with this and wants to share some knowledge? I would like to know what these parameters really do and maybe there are better ways for our setup...
Thanks,
David.Hi,
thanks for the reply. I found the detailed explanation in user guide you mentioned.
I am not sure that we made the setup in an optimum way.
We use for example fixed days supply = 5 for many buy items, because we place weekly Purchase Orders for these items and want to have the planned orders combined instead of having a planned order for every day.
And we use the fixed order quantity to prevent two things:
1) The size of the planned order gets below a typicall Lot size and the calculated leadtime for this planned order is too short. We define item based resource usage rates so it will calculate the exact lead time for the small planned order, but in reality our production has to run the full Lot which takes more time of course.
2) without the fixed order quantity the planned orders might become too big, which makes scheduling of them more difficult, because finding a free time-slot on the machines for a huge quantity must be more difficult than for a smaller planned order.
But unfortunatly Oracle does not provide some business cases, especially for our semiconductor industry so it is more trial-and-error what we are doing...
regards,
David. -
Hi,
we are using ASCP together with SFM. We do descrete manufacturing for our products. The products flows look like this:
- asssembly item A (finished good item)
=> is make item (has routing), uses component3
- component3 is make item, uses component2
- component2 is make item, uses component1
- component 1 is buy item
So the flow of material looks like this:
component1 -> component2 -> component3 -> assembly4
(buy) (make) (make) (make)
In production we typically process only full Lots/Batches with a certain quantity depending on the component1.
We want that ASCP plans always full Lots, because the leadtime of the full Lot is always needed in reality. If ASCP plans with partial quantities, then the estimated/calculated leadtime for the planned orders will not be realistic.
To achieve this we want to use the Fixed Order Quantities, however it turned out that we run into several other problems if we use this parameter. For example it happens that system recommends to buy material (component1) just for the sake of the fixed order quantities.
We are running into issues if we enter the Fixed Order quantities, and we get other issues if we leave this empty.
I am looking for someone who has experience with this parameter and can give some recommendations. Maybe we use the wrong approach and there are other paramters that we should use to achieve what we want.
Big Thanks in advance,
David.Sub: "We want that ASCP plans always full Lots, because the leadtime of the full Lot is always needed in reality. If ASCP plans with partial quantities, then the estimated/calculated leadtime for the planned orders will not be realistic."
Oracle ASPC has some more meaningfull logic in Lead time calcualtion. It is not that Lead time will be wrong when you Process the low batch. On the other hand lead time goes up when you use Fixed order Quantity , irrespective of Demand. It also files up your inventory.
See for example, If you have fixed order quanitity for an item say 1000 numbers;assume that you have on hand for 500. and need to refill balance 500.
What will ASCP recommend you ?..1000 numbers.It files your invenotry...Does this mean that lead time for producing 1000 is less as compared to 500!!! also is it acceptable to produce extra 500..
.It also make you to plan low levels adversly with case cade effect...
You issue is not lead time...You are talking about setup time. If you produce more batches, you are occuring the more setups for same items. it makes lead time more lengthy considering the setup time. This is your problem and wanted to limit this or wanted to make it optimization. (Is it right my observation of your problem??)
How to control...?. Rather than speaking about lead time , let us talk in other way ...what is the Planning perid do you want want to conisder while planning a batch or lot size?. In other words let us take an example,,,
Component2 has a lead time of say 30 days for 1000 numbers. At the same time, I am able to accamadate only max 1000 numbers. If the demand goes up ,say for example, 2000, then I need to have two batches. If the goes less than 1000 and demand split in time gap ...for exmaple, 500 in first of week of may and 200 in last of week of may, still I want to consolidate 500+200 into one batch and want to Plan 700 as it is less that 1000.
If the above condition matches..you need to use Min Order/Max orde qunatity and Fixed days supply together. This is the wonderful way it controls the objective as stated above.In this example you will set min 1 , max 1000 and fixed days supply to 20 days.
How ever in some cases if the demand comes likes this, say for exmaple 2000 and 2000, then there is a recommendation to produce 1000,1000,1000,1000 with due date as equal to first lot. However, if you use constranied based planning, APS will reshdule and give you best possible time slot. Other wise, if there is enoguh capacity you are still able to produce 4 batches in first due date. The result of this behaviour depends on EDD and ECC and will vary.Make it understand this and do test case..go ahead..
Thanking you,
dr -
Calculate fixed order quantity by using econmoic order quanity
Hi experts,
i have one requirement
price of pen is 2/-
order costs per order is 6/-
holding costs per year is 15%
the demand forecast is 5,00,000 pen per year. SAP ECC offers more detailed information for the next two weeks:
days week day demand forecast
1 mon 1300
2 tue 1400
3 wed 1200
4 thu 1000
5 fri 1000
6 sat 1300
7 sun 1400
8 mon 1500
9 tue 1400
10 wed 1400
11 thu 1300
12 fri 1400
13 sat 1400
14 sun 1400
in that
question a:
calculate the fixed order quantity by using economic order quantity model for this material! outline the general EOQ formula and show how you apply it to this example.
<b>points will be rewarded..</b>
its an urgent..
regards,
priyanka reddy.Hi experts,
i have one requirement
price of pen is 2/-
order costs per order is 6/-
holding costs per year is 15%
the demand forecast is 5,00,000 pen per year. SAP ECC offers more detailed information for the next two weeks:
days week day demand forecast
1 mon 1300
2 tue 1400
3 wed 1200
4 thu 1000
5 fri 1000
6 sat 1300
7 sun 1400
8 mon 1500
9 tue 1400
10 wed 1400
11 thu 1300
12 fri 1400
13 sat 1400
14 sun 1400
in that
question a:
calculate the fixed order quantity by using economic order quantity model for this material! outline the general EOQ formula and show how you apply it to this example.
<b>points will be rewarded..</b>
its an urgent..
regards,
priyanka reddy. -
Regarding lot sizing procedure in Pharma scenario.
Hi PP Gurus,
I have a scenario for lot sizing for small and big batches of a product.
For example, let us say the order quantity is
Case 1: 1000 kg of finished product
then the fixed lot size will be 500 kg (which is small batch size) and 2 batches will be taken for production
Case2: 3000 kg of finished product
then fixed lot size will be 1000 kg (which is big lot size) and 3 batches will be taken for production
Could anybody please help to propose solution for such scenarios?
Thanks,
Abu ArbabHi
You may use FS Fixed Lot Size with Splitting for that purpose.
This link would help you;
http://help.sap.com/saphelp_46c/helpdata/en/f4/7d281244af11d182b40000e829fbfe/content.htm
Regards,
Onat -
Scheduling Agreement - Fixed Order Quantity
Hi Experts!
For a short time we work with scheduling agreements in our company. So far it work well, but know i have a question, maybe anyone of you can help me with my issue.
We would order always the same fixed order quantitiy, i know that i can do this in the material master, but we still have more than one vendor for one material. So i can´t maintain the fixed order quantitiy in the material master.
Does anyone have a idea, how i can handle this? Maybe in the inforecord, but the MRP doesn´t consinder the values in the inforecord.
Best Regards
FlorianHi,
Use CDHDR and CDPOS tables.
Goto VA33 or VA32. In menu Click on environment choose changes.
Enter agreement number and execute. select the line click on choose button. you will get details.
Regards,
Chandra -
Dear friends,
I Used Monthly Lot size ( MB) For my finish Material. Material has safty Stock. If I put Next Month plan in MD61 and run MRP in current month, system creates seperate planned ordrs for safty stock requirement and next month requirement. But I want that both requirements should be generated with combined quantity.
How can i do this?
Please help me.
Thanks!>
kiran ghule wrote:
> Dear friends,
> I Used Monthly Lot size ( MB) For my finish Material. Material has safty Stock. If I put Next Month plan in MD61 and run MRP in current month, system creates seperate planned ordrs for safty stock requirement and next month requirement. But I want that both requirements should be generated with combined quantity.
> How can i do this?
> Please help me.
> Thanks!
Kiran,
Since your material is defined with Safety stock and there is no stock currently, system would be creating the procurement proposal for safety stock with current month requirment date and for the next month requirement it would create one more planned order with requirment date of next month. This is a standard behaviour.
I dont understand why you want to have the MRP combine the Safety stock requirement + next month requirement when there is a shortage for safety stock in the current month. Please clarify, your requirement looks incorrect.
Regards,
Prasobh -
Offset in planned order with weekly lot sizing.
Hi,
After i run MRP with a weekly lot sizing procedure, avaiability date = start of the period, the MRP groups all planned orders of the week at the first requirements date of that week.
But what i need is to put that group of the planned orders in the last working day of the week before.
For example:
Week
Friday Week n
Week n+1
Ind. Requirements
0
1
1
1
1
1
Planned order
5
Can you please help me how to solve this issue.
Thanks in advance.
MikeHi,
It is possible by configuring a version of the standart weekly lot sizing procedure. In customization for lot sizing procedures (tr. OMI4), copy the lot sizing procedure WB and name it. In the detail settings of the procedure set the scheduling field to 1. This makes the delivery date of the procurement proposal the period start (you requirement is the last day of the previous period, however this is the best next option). You may press F1 after clicking on this field and learn about other options. Please assign this new procedure to the material and test it.
Regards.
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