Safety Stock & Min Safety Stock

Dear SAP experts,
Please explain the difference between Safety Stock and Min Safety Stock.
What is the implication on the system if these two fields are maintained?
Thanks...
Rgds,
Kian

Hi
By maintaining safety stock in MRP run systems doesn't consider this qty for calculation but for total planned order to match re-order point it is considered.
Min safety stock is totally taken out from stock for MRP.
Regards
Rang

Similar Messages

Safety stock and min safety stock

Dear all,
CAn anybody explain me the functional difference between safety stock and min safety stock?
And what is the meanng of safety time?
Karthick

Hi,
Safety Stock:
The quantity of stock to satisfy high requirements. The purpose of the safety stock is to prevent material shortage.
Safety stock as the name suggest is the stock level till which the dead stock or stock out situation will not arise (probable figure based on past data maintained in master).
As such this figure is not stock, it is cut-off figure maintained in master which is used for Planning and once the stock level dips below this value, you can configure system to generate PR, orders automatically. It has its relevance in MRP and CBP.
Safety stock is not used in production.
Minimum Safety Stock
    The quantity that defines the lower limit for safety stock. This value cannot be exceeded.
    The safety is checked to see if it is greater or equal to this lower limit.
    The lower limit is checked if you use an availability indicator which shows, according to customizing settings, if the safety stock is to be calculated again in a forecast. If the safety stock is lower than this level in forecasting, the safety stock is automatically increased to the value of the lower level.
The safety stock must always be greater or equal to this lower level (minimum safety stock)
Hope this will help help you.
Regards,
Pavan

Refill safety stock based on a certain leadtime

Hello,
is there a way to refill / replenish your safety stock based on a certain leadtime ?
as now MRP requests to get in components today or in a week , while they have a leadtime of several weeks.
for example :
i have put a fixed safety stock of 300 pcs on a component.
This component has a leadtime of 5 weeks
i received an order for 50 pcs to be delivered in 1 week.
So we ship this from our safety stock.
Now MRP is creating demand to get 50 new pieces of this component to be delivered in 1 week ( to fill up again the safety to 300 pcs )
But i would like that MRP asks to order this component on the leadtime of 5 weeks
As it will not be possible to get this component in on 1 week.
best regards

Thanks Avinash for your reply,
i also noticed that safety stock gets the highest priority demand and that's probably why i couldn't find a solution using safety stock.
Is there an other way how i should handle this?
Is there a way where a replenishment in oracle is done based on leadtime?
as i mentioned before, i want to get my stock automaticly replenished based on a component/product leadtime when i get under a certain stock level.
I'm currently thinking to change the planning to min-max planning or reorderpoint planning and as soon as my stock comes under the minimum level, oracle will propose to refill the stock. But also here i don't know if oracle will use the leadtime to create new demand.
i still need to test this.

What is Formula for 'BS' Method of Extended Safety Stock Planning ?

Hello SNP Experts,
I have a Important Question regarding Extended Safety Stock Planning Calculation in SNP Module.
I have read the SCM Help, SDN Forums and SNP Training Course help, but am unable to find the Formula to Calculate Safety Stocks using the Beta Service Level (Method 'BS') for the Extended Safety Stock Planning Methods.
Reading the help, training material, past SDN Questions I do understand the Standard Formula for Safety Stock is ...
S.S = ServiceLevel x SQRT (ReplLeadTime) x StdDevDemand
However there are Factors like below that are definable in the Location-Product Master ...
1. Forecast Error %
2. Replenishement Lead Time Error %
3. Min & Max Safety Stock Levels
4. Beta Service Level
5. Max. Stock Level
How are these Factors used ? What is the Formula using these Parameters to Calculate the Safety Stock ? The Calculation in SCM-APO is not clear from anywhere.
I am specifically interested in the Method "BS".
Can anyone Guide me ? Points Guaranteed if a reply covers the exact question above (I have done some research before raising this question on Forum).
Regards,
Ambrish Mathur

Harish,
I'd seen these forums already. Thanks for responding.
This 'secretive' calculation is quite annoying. If SAP does not Publish any documentation around the Formula, how can the Customer be convinced to use SAP's Safety Stock Calculations (no wonder many SAP Customers are going the 'ToolsGroup' way of Safety Stock Calculations).
On Safety Factor (I saw in your notes) I am aware that
a factor of 2.33 equates to 98.6% service Level from long back based on Normal Distribution. The Formula as known much earlier is this ...
SS = SafetyFact x SQRT (RepLeadTime) x StdDevDemand.
based on Normal Distribution.
However there are new Fields in APO since ...
Is there no documentation whatsoever on how the 2 Fields - 1. Forecast Error %
2. Replenishement Lead Time Error %
are used at all in the SS Calculation ?
Where do these New MasterData Parameters Plug-in ?
The other change now is in SS Planning, the SSs could be different for each Time Bucket in Future. How does Beta Service Level also impact the Calculation ?
Is there a URL / Book someone can point me to ?
Regards,
Ambrish

Safety stock and safety period

Can anybody help me in understanding the effect of safety period in MRP..
CAn anybody give me an explanation with numbers so that i could test and understand..
Please help me out..

Dear
There are plenty of earlier posting on Safety stock and safety periods .
Safety Stock : This is one kind of Un-restricted stock which will be used to full fill the un-expected damand for any material apart from the normal stock .Safety Stock calcuation depends on requireiment .It can be pre-defined ( manual safety stock -MRP3 view-Safety Stock ) or Automatic Safety Stock based on the MRP Type set up in OMDQ.If you want automatic safety stock , then it will calcuated based on Forecasting view parametrs , forcast model , MAD, BASIC value calcualted wheil excuting Forecasting collectively or individually .
Safety Stock Calcualtion happend based on following CONDITION :
1.MRP type should be Forecast Base MRP -VV,VB,VS,V1,V2.Here MRP type calculates the Automatic Safety stock based on the Forcasting View Maintained in MM02 with proper Consumption History .( 261,501 etc update control in MMR through OMJJ set up --Please check MMR Forcasting View -Cosnumption Histry at least 6 months are there or not ?)
2.In MRP Type -SPRO-MRP-Check MRP Type -Select any one of the MRP Type like VV , you will find that Calcualtion of Reo-Order Point and Safety Stock Check Box Ticked .Based this set up and above Forcasting view , safety Stock will be calcualted with certain formaul .Here in the Material Master MRP3 view u need to maintain Service Level Percentage of that Material whcih will be consideredr as Service level factor to calcvualte the Safety Stock automatically based on the MAD and Basic Values calcualtion in Forcating View Individually (MM02) or collectively in MP38 .
Hope this above facts will help you to understand the calcualtrion of Safety Stock .
Formula : Safety Stock = R x Sq.rt. W x MAD
Safety Stock = R x W x MAD
Refer our earlier posting on the similar issues :
Automatic reorder point calculation
safety stock and min safety stock
Hope it clarifies
Regards
JH
Edited by: Jiaul Haque on Feb 21, 2011 10:31 AM

Safety stock data update in APO product master

Hi Gurus
I have an active IM for a product . when i change the safety stock in R/3 , the same is not getting updated in APO. The method maintianed is SB
Please suggest

Finally i need to apply the below code in Exit EXIT_SAPLCMAT_001
INCLUDE ZXCIFU01 *
IF CT_CIF_MATLOC IS REQUESTED.
if no saftystock-method is explicitly set
use method 'SM' if safty stock & time is transfered
use method 'SB' if only safty stock is transfered
use method 'SZ' if only safty time is transfered
LOOP AT CT_CIF_MATLOC.
LOOP AT CT_CIF_MATLOCX WHERE MATNR = CT_CIF_MATLOC-MATNR AND
LOCNO = CT_CIF_MATLOC-LOCNO.
CT_CIF_MATLOCX-MSDPSBMETH = 'X'.
*APO und R/3: Safety stock
IF CT_CIF_MATLOCX-SAFTY = 'X' AND
NOT CT_CIF_MATLOC-SAFTY IS INITIAL.
*APO: Safety days' supply R/3: Safety time/act.cov.
IF CT_CIF_MATLOCX-SVTTY = 'X' AND
NOT CT_CIF_MATLOC-SVTTY IS INITIAL.
*Maximum of stock und safety time
CT_CIF_MATLOC-MSDPSBMETH = 'SM'."Maximum
ELSE.
*Safety Stock
CT_CIF_MATLOC-MSDPSBMETH = 'SB'.
ENDIF.
ELSE.
IF CT_CIF_MATLOCX-SVTTY = 'X' AND
NOT CT_CIF_MATLOC-SVTTY IS INITIAL.
*Safety days' supply
CT_CIF_MATLOC-MSDPSBMETH = 'SZ'.
ENDIF.
ENDIF.
MODIFY CT_CIF_MATLOC.
MODIFY CT_CIF_MATLOCX.
ENDLOOP.
ENDLOOP.
ENDIF.
Thanks all for the input

Report for Reorder point, safety stock, current stock and fixed lot size

Hi,
Purchasing Dept. is looking for a report which can give list of materials falling below the reorder point, so that they can go ahead and create procurement proposals for those materials.
They also want to see the Reorder Point, Safety Stock, current stock and fixed lot size in the same report.
Let me know if there ia any standard report availbale which displays the same or any approach to get the same.
Thanks in Advance.
Regards,
Shankar Goud.

Hi,
There is no standard report because this is meant to be managed by the MRP run.
The MRP lists show all materials that have a problem (such as stock below reorderpoint) but MRP generates requirements for these anyway and so all you need to do is to look for the MRP generated requirements (requisitions?) and you have your list?
Are you using MRP?
If so then please use the standard functions in MRP to get this.
If not, then WHY NOT?
Steve B

Inventory Report for current stock and Safety, Minimum etc stock levels

Hi,
Is there any report available to view the current stock against the minimum, safety stock levels so that the user can plan further actions accordingly. Can anyone please guide me on this.
Thanks in Advance.
Regards,
Laxmi

Hi Shailesh,
Is there any way we can include some extra fields into this MC.9 report - i tried but could not find anything. Can you please help.
Regards,
Laxmi

Report on current stock and safety stock

Hi,
I want to have the report on current stock and safety stock.
In MC.9 it gives wrong safety stock. When I go to cross check the safety stock in material master & in MC.9 I see differences.
Thanks,
Kiran

You can user tcode MC.9 or MC.5 to know valuated stock available at given plant. Stock lying in Returns (MB52) will not be a part of this report as it non-valuated stock.
The stock in the accounting view of the material master considers stock at plant level including stock in Transit (Intra & Inter plant stock trasnfers) & special stock like stock issued to vendor , consigment stock etc which is valuated at plant level.
whereas and stock in the plant stock view of the material master does not consider such special stocks hence there will always difference in both veiws.
For Physical stock as on particular date you can consider MB5B report with radio button "Storage location/Batch Stock" wherein you will get Quantity issued & Qunatity received in those SLOC along with Opening stock & Closing stock for the specified period.
use tcode
MBLB to know stock at vendor.
MB54 - Consignment Stock.

Safety stock not covered by schedule lines in planning run

Hi !
In our organization we are trying to implement scheduling agreements and automatic creation of delivery schedule lines through MRP. We have MRP type PD and it considers the reservations created by PM orders and Production orders as requirement elements. When I do the planning run, it creates schedule lines for the PM order reservations and purchase requisition for safety stock. I need it to create schedule lines for all scenarios. Kindly help and suggest a solution.
Regards,
Satya

Hi,
Please refer the below links.
Schedule Lines not getting created in MRP
Re: No Scheduling line is generated when RUN MRP
Hope it helps you.
Thanks.

Calculation of Safety Stock and Reorder Point under Forecast Model T

Hi Gurus!
Happy Holiday!
I would like to ask for your assistance on how the the safety stock and reorder point was calculated with the following values available. I would really appreciate it if you could give me details on the calculation.
Below are the values:
Basic data
Forecast date        01.12.2009        Unit                  CTN
Forecast model       T                 Service level         0.0
Period indicator     M                 Paramtr profile
Control data
Initialization                                Tracking limit        4.000
Model selection      A                 Procedure selection   2
Parameter optimizatio                Optimization level    F
Alpha factor         0,10               Beta factor           0,10
Gamma factor       0,00              Delta factor          0,30
Basic value           5.464-           Trend value          5.603-
MAD                      4.758            Error total              4.722
Safety stock         1                   Reorder pnt.          1
No. of values
Consumption           6                Forecast periods       1
Initial. periods      0                Fixed periods          0
Periods per season   12
Historical data
Period                Original     Corrected value
11.2009                3.000              3.000
10.2009                0.000              0.000
09.2009                0.000              0.000
08.2009                9.000              9.000
07.2009               21.000             21.000
06.2009               20.300             20.300
Forecast results
Period                Original     Corrected value
12.2009                0.000              0.000
Appreciate your assistance!
Thank you and Happy Holidays!
Ji

Sweth, you are asking for consulting, and in my opinion it is way beyond what can or should be reasonable to achieve in such a forum. You are asking complex questions, that most probable have more than one possible answer.
I suggest that you get on-site help from a knowledgeable and experienced consultant. These are crucial business issues, and should be dealt seriously.

Safety stock and Reorder point calculation in inventory planning

Hi,
How System does the calculation of own safety stock, and Reorder point, maximum safety stock level at parent and child location while running inventory planning services in SAP APO SPP. does anyone about the calculation please let me know
Regards
Puneet

Hi,
How System does the calculation of own safety stock, and Reorder point, maximum safety stock level at parent and child location while running inventory planning services in SAP APO SPP. does anyone about the calculation please let me know
Regards
Puneet

Safety Stock T-code

Dear Experts,
What is the T-code for viewing all the safety stock which are maintained for all materials.
Regards,
Phalgun Patel

Hi,
Execute t-code se16, then enter MARC table and press enter. Enter list of materials or plants or this can be run without any selection parameter.
Execute it and look for field EISBE (Safety stock).
Regards,
Gaurav

No planning file entry for safety stock

hello!
i do not have a planning file entry for safety stock. my material has required safety stock and no quantity on plant stock. therefore MD01 should create a purchase requisition - but is does not. i do not have an entry in the planning file as well.
any ideas what could be the reason?
thanks!
matthias

Hi,
- First of all check whether MRP is activated or not for Perticuller Plant.T.code is OMDU.
- Which MRP type is maintained for that material?
- In rare cases (Materials uploaded by LSMW using Badi) it is observed that system miss to make the entry in Planing File.So better will be set a Back Ground job to activate Planing file OMD0 or make manual entry using T.code MD20.
Regards,
Dhaval

Dynamic update of safety stock in SAP R/3 systems (ECC 5.0 version)

Hi Friends,
Forgive my newness to SAP. Let me explain the problem i am facing in SAP. I want to identify the parameters to dynamically update the finished goods safety stock for each depot by SKU wise.
Current process :- Safety stock is calculated manually and updated by using Transaction code MS02 in the system.
It would be highly useful if i know the flow in SAP system and how the current process can be changed?
If more info is required i'm ready to give.
Thanks in advance

Hi Mario Adler,
Thanks a ton for ur answer.
Will it update safety stock for finished goods in each depot by SKU wise? Raw material safety stock isn't my concern.
project description : Manufacturer of chemical goods , 70+ products,350 skus
Distribution : factory to depot (bulk volume)
Mother go-down to depot(Stock transfer)
No of depots :33,factory:3,mother go-down -1
Sales forecasting is done in excel for every month and updated to SAP via BAPI. After that DRP,MRP and other runs takes place.
What are all the areas i need to touch in to get the parameters to update the safety stock?
Regards
Arasu
Edited by: Arasu_IIM on Apr 26, 2011 12:52 PM

Safety Stock & Min Safety Stock

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