Sample steps to setup BOM explosion in MRP

Hi everyone,
I am one of those unlucky folks that can't seem to get a simple BOM with FERT to explode HALB component within in MD02. I have spent two days reading every post about this common issue found over the Internet as far as 2007 and also read the SAP note 13023. I tried every suggestion to troubleshoot without success.
In my environment, I am using a clean IDES with standard SAP configuration, meaning no changes were done on it. As faced by others before, the BOM component just won't explode. I have even blank the days in MRP2 not entirely sure if my way of troubleshooting make sense. For simplicity, I have input a safety stock value to trigger the FERT within MD02.
Rather than I ask the same question again about where it might have gone wrong, may I know if anyone here can send or point me to a sample few steps guide or screenshots for the FERT and HALB MRP1 - 4 views and the BOM itself (1 material with 1 component)? I can then simulate the results using my IDES and move on from there.
Asking in this forum is actually my last attempt. My apologies to forum administrator for posting a request instead of something helpful to the community.
Thanks.
D.B.

Hello DB
The most common cause for a missing BOM explosion is the validity.
On transaction OPPQ, on tab BOM explosion, you can determine which date will be used for the BOM explosion. You should make sure that your BOM is valid on this date. You can try to create your BOM with a validity in the past, in order to guarantee that it will be exploded.
Another common reason is the setting selection method on MRP4. If it is set to 3, the BOM will be only exploded if there is a production version.
BR
Caetano

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BOM Explosion for MRP Area

Dear Expert,
I have doubt regarding BOM explosion for MRP Area. This doubt is triggered when performing MD01, as result I do not find the dependent requirement in MD04 for my FG. I have maintained the BOM through CS61 and MRP area for all component, I understand that only component level system is taking into account MRP area (storage location). FYI before maintaining all components to MRP area, the BOM explosion was successful exploded. Your advice is appreciated.
Best regards,
Mahnansa

Dear,
Please check the Explosion control in Customizing, Transaction OMIW.
Try to explode the BOM in CS11 , CS12 or CS13 if it is working there in curret date then chack the planning file entry in MD21.
You need to convert the planning file entery at MRP area in OM0F.
Also note the dependent requirement is not generated in the corresponding MRP area to which the production storage location in the material master has been not assigned for the data of the MRP area.
Regards,
R.Brahmankar

BOM explosion while MRP run

hi all
I have a FERT for which raw materials are assigned in the BOM. but while running MRP, the BOM is not being exploded and the list doesnt show the raw materials.
I have checked in the Overall maintenance of the plant parameters in MRP in SPRO and the required paramenters are maintained.The scenario is MTS - strategy 10.but still the BOM is not exploded.
Could anyone solve my query
Thank you in advance
chandra

Hi Chandra,
Could you please check if there was an exception message "50 or 52"? If so then it can be beacuse for the BOM explosion date system is not able to get a BOM.
If there were no exception messages then check in MRP4 view of the FERT material for dependent requirement defination. This should be blank.
Hope this helps..
Regards,
Prasobh
Reward your points if this was helpful.

PP BOM explosion during MRP

Hello all,
During MRP, BOMs for dependent assemblies are supposed to be exploded. I am running MRP in the background. Until recently, MRP is exploding only the first level BOMs such that subsequent assemblies are not exploded. Is there a setting I can check to ensure that BOM is doing a multi-level explosion. MRP set to NETCH. Thank you for your input.
Joy T.

Dear Joy,
1.check whether the BOM status is 1 for the dependent assemblies in the BOM header.
2.In case if you have used change numbers with release key for creating the BOM for those dependent assemblies,then check
in CC02 whether the release key is set.
3.Ensure that the MRP type is not ND.
Also check this thread whether this can help you,
MRP RUN NOT EXPLODING BOM
Regards
Mangalraj.S

Bom explosion in MRP

Hi
I have following scenario -
I have Regular Sales order bom For one material X in Plant A and as long as engineering is not completed, this Sales order bom is having status inactive. Once engineering is completed then it will become active.
For Same material X in Plant A material BOM also exist ( It is used for stock transport order) and I dont want MRP should select material BOM if it doesnot find Active Sales order BOM.
How to achieve this.

Hi
Try these steps
1) Create BOM Selection ID in SPRO
Sel ID(say for ex 09) Sel pr (1) Usage (5)
2) Assign the ID in OPPQ under BOM/Routing selection Tab
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BOM explosion in MRP for non-stock material

Dear friends,
I have a non-stock(bom item category 'N') service material setup as a component in my production BOM, which during MRP run, should create a Planned order or Purchase requisition for that non-stock component. But, when I run MRP for the top-level material, it doesn't create any requirement for that service material, while all other stock material(Bom item category L), it generated dependant requirements.
Appreciate your help.
Thanks
Suri

Dear Suri,,
Please go through this.
Non-Stock Items Use this item category if you want to enter a
material that is not kept in stock before use, and that is only procured for a
specific planned order or production order.
The material is only rarely required for a custom-made product and is used
directly in the product as a purchased part.
Before you start
You can enter a non-stock item either with or without a material master. If you
enter a non-stock item without a material master, you must enter a description.
For non-stock items, you have to maintain purchasing data in the bill of material.
You enter the following materials as non-stock items because the quantities are
not updated in the material master record:
o Materials with a material type that supports configuration
o Pipeline materials, which can be taken from a pipeline at any time

Special functions
The following functions are supported for non-stock items
 You maintain purchasing data for non-stock items in the bill of material.
 In the planning run, the system generates purchase requisitions
instead of dependent requirements for components that are procured directly.
When you configure your R/3 System for MRP, you can define whether direct
procurement is triggered by the planning run or by production order management.
 Product costing processes take valuation data from the BOM item.
The system determines the release strategy on the basis of the price data you
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Mangal

BOM Explosion IN MRP RUN

When I run MRP BOM Explosion doesnot take place for certain F parts.This is REM scenario.Planning strategy is 40.I have already checked Planning file entries.
It is OK.Please guide.

Hi,
Pl. check in T.code oppq (plant parameters), if you have mentioned the BOM explosion ID. or in T.code oppq (mrp group).
Also check in the material master, mrp 4 view,
the bom selection id.
whether it is based on lot size or based on production version.
You can cross check using t.code cs11 or cs12 (bom explosion).
Rgds,
SD

Bom explosion after MRP (variant configuration)

Hi Experts,
I'm facing a problem here, for unknow undentified reason until now, after I run the MD50 with a configuration material, I cannot get a explosion of the itens. This is happening in 4 cases here and I cannot get any good result, I check dependencies rules and everything and no success
Does anyone know waht can I do?
regards
Oliver

HI,
If a BOM is not exploded possible reasons could be
1. Validity period of BOM
2. BOM Status should be active for MRP.
3. BOM Components should be relevant to production.
4. Check whether you have defined the selection ID for the
priority of BOM Usage in SPRO define order of priority of
BOM Usage.
Regards,
nandha

BOM Explosion in MRP runs for sub-contracting PO

Hello Experts,
We have sub- contracting Purchase order in business scenario.
Subcontracting PO is required to be considered as demand for MRP. As I have checked PO is showing in MD04, after MRP run using transaction code
MD02 subcontracting BOM not exploding.
Sub contacting PO raised on “X” procurement type material, PR is required on BOM item “F” Procurement type
Please suggest what all special setting is required as master data & configuration data.
Thanks in advance!!!

Hi,
In the header or parent material (the material that is being produced bu your subcontractor) you have to maintain the following data:
Procurement type = F
Special Proc Type = 30
MRP Type = PD
Lot Size, Minimum Lot Size, Rounding Value: Enter what is convinient for your business.
Be sure you have a BOM (CS01)
Create a Production version indicating the BOM (C223)
Enter Selection Method 3 in the MRP4 view of the material master
Create an Info Record (type Subcontracting).. (ME11)
Create a Source List (ME01)
Run the MRP and check MD04
Kind Regards,
Mariano

MRP RUN- KIT BOM explosion not working

We setup one layer BOM’s for our maintenance KITs as parent material and components as child material. For example KIT is TS10000-K1 and components are TS10001, TS10002 etc setup as next layer with in the BOM. Both KITS and components are defined as material types ERSA (Spare parts). These one layers BOMs are setup as production BOMs and expected to create purchase requisitions for KITS and components by exploding BOMs during MRP runs. We use purchase requisitions and convert them into POs to procure both KITS and components. We DO NOT USE Panned orders and Production orders.
The safety stocks / reorder point are considered as demand for KITS and components as we do not have any external demand for KITS and components.
MRP run is creating purchase requisitions automatically for both KITS and components as per safety stocks and reorder point defined in MRP Views of Material Master. This is working as expected.
The issue is: KIT BOM’s are not exploding to generate purchase requisitions for the dependent components of KIT BOM. Please suggest the way to resolve this issue.
Split valuation: Also we plan to use split valued KITS with both new and refurbished. So we need BOM explosion for split valued KITS
also (after the 1st issue is resolved).
I verified the following items to make sure the required configuration and data setup is defined correctly.
1) Planning file activated Plant - OMDU
2) Executed MRP run with Total Planning - MDBT and MD02 (single item, multiple levels)
3) BOM explosion for MRP activated- OS23
4) MRP type in MRP1 view- PD and VB (I tried both separately but BOM is not exploding).
5) Procurement type “F” (MRP 2 view) and lot size “EX”
6) Planning strategy in MRP 3 view (tested w/o planning strategy and with strategies 10 and 40. But BOM is not exploded)
7) BOM status and usage (status is active and usage is for production-CS02 and OS20)
8) BOM Validity date (Valid)
9) BOM structure in CS12 (BOM is exploding in CS11)
10) Availability check
11) Selection of BON ID to have BOM usage indicator assign (OS31).
12) No alternate BOMs or production versions or work scheduling view are used.
Please review the above 2 issues and suggest any workable solution. Thanks in advance!
NOTE: I extensively used MRP with multi-level BOM explosion in my earlier projects without any issue. However the above issue is a bit strange why one layer BOM is not exploded in this case.
Regards
Srini

Hi
Thanks for your response. I reviewed all SAP notes and none of them are applicable to my scenario.
1808396 - BOM changes not considered by MRP: I have not changed BOMs.
1781324 - MD11: Valid BOM alternative is not found. We do not have alternative BOMs.
1791009 - No BOM explosion after changing production version: We am not using production versions.
Our Material KITS are PM spare assemblies set up as BOMs and consists of individual spare parts as components. We are creating purchase requisitions and not planned orders. We are not using PP functionality/Production orders.
MRP is generating purchase requisitions for KITS and components as per ROP and safety stocks. In other words it is working as expected. The issue is BOMs which are parent assemblies are not exploding to the next lower level components.
Please note that I am not getting any error messages when MRP is executed.
Regards
Srini.

Bom explosion in sales order mrp(MD50)

Hi Experts,
In sales order MRP i.e. MD50 Getting the planned orders for header material(Finished goods) generated but for raw materials (BOM items) Purchase requisitions are not getting generated.
Details:
Header material A and raw materials B and C.
In material B in MRP 4 coll/ind indicator is 2 And same indicator for C is blank.
Now when we are running the MRP sales order based it will generate the purchase requisition for C only but not for B.
In OPPQ we have done the setting for sales order BOM explosion.
Can anyone please throw some light what is the setting missing in customization or in front end?
Thanks in advance.
Regards
Vilas

Dear,
If you select individual requirement then system will not consider available stock and generate Proposals for every single requirments. Check in MRP4 view Individual / Collective .
Also you will find PR and Plan order with account assignment of Sales order (in case of MD50).
- If you select collective requirement then system will not generate planing proposals through MD50.In that case you have to go for individual MRP (MD02 / MD03)
Please try and come back.
Regards,
R.Brahmankar

Without MRP, with BOM explosion

Hi,
I'm new to SAP and learning SAP SCM. I would like someone to brief me on what the following lines imply, especially 'without MRP, with BOM explosion'.
"dependent requirements must be determined for materials that are planned in SAP ECC. So, you assign the MRP type X0 with MRP procedure X (without MRP, with BOM explosion) to the materials planned in SAP SCM."
Thanks,
Krish

Hi,
Without MRP , with BOM explosion - means the dependent requiremens are created for this materials from APO.
The MRP will not run in APO. Only the dependent requirements will be created from APO. The MRP for this materials will be executed the ECC or R/3 system to create planned order anb purchase requisitions.
Thanks and regards
Murugesan

What is the functionality of Bom explosion individual/collective in MRP 4 View

Hi Experts.Please give idea about what is the use of functionality of BOM explosion Individual/collective in MRP view 4.How this function will work in strategy 10 and 20.
thanks in advance.

Hi,
This is a very generic question...If you explore in forum or net you will get lot of information...
This is normally used in make to order strategies like 20, 50 etc...
The individual/collective indicator in the material master record determines
whether a component is procured for a special customer requirement in the
individual segment.
The indicator "1" for individual requirements means that the material is being
specially manufactured or procured for a sales order. A special individual segment
is created for each requirement. An individual requirement is only created if the
higher-level material does not create a collective requirement.
The indicator "2" for collective requirements means that the material is produced
or procured for various requirements. You can find these requirements in the net
requirements segment.
The indicator "blank" means that the component is to be planned in the same way
as the higher-level assembly.
In the above example, two individual segments are created for the shaft for sales
orders A and B.
Thanks
Kumar

MRP run without bom explosion

Dear All,
Can it possible to run mrp without bom explosion against demand management & demand program for 78 weeks its mid-long term?
BOM is not considered by client,so it possible to run mrp without bom?
Regards
Gajjen

Hi,
You Can run MRP with out BOM explosion
Option 1: In MRP 4- Set MRP dependent requirement - 1
or
Option 2: Make the BOM status to 2 In active.
or
Option 3:
IF you want BOM for Other purpose such as costing, Then
Create a New BOM status as per your requirement in OS23, Remove the check mark of MRP Explosion .and assign to the BOM status to respective bom
Regards,
Sundaresan
Edited by: Sundaresan . E. V on Aug 26, 2010 5:03 PM

BOM explosion in CRM Service Contract

Hello
We want have a BOM explosion working in CRM for service contracts
Here are the details :
We have replicated the materials from ECC to CRM. We are not maintaining any BOMu2019s in ECC.
The idea is that we maintain the BOM Structure in CRM only, as we donu2019t want to have the Items as a billable item in a position, only for information purposes (or later on for metering)
We have maintained the product category for the header product in CRM so we are able to maintain depended components
(Relationship type SCDEC S Dependent Components (DC) )
Not we are able to assign dependent component to the header material
Item category groups:
We understand that the standard item category groups that should be used are ERLA for the header product and LUMF for the Item product.
In order to support the same functionality for the given item category group , maintained at the product level in ECC we copied the same setting for the item category group from the standard to
our settings.
Standart
Tx type Item Cat Group item category structure scope
TA ERLA TAQ A single level Explosion of Structured Product
TA LUMF TAP A single level Explosion of Structured Product
So we have copied TAQ to ZTAQ and TAP to ZTAP.
ZS01 is a copy of SC (service contract)
Tx type Item Cat Group item category structure scope
ZS01 ZLEI ZTAQ A single level Explosion of Structured Product
ZS01 LEIS ZTAP A single level Explosion of Structured Product
But when we use a header product in the service contract, we cannot see the BOM is exploding.
We have also created some products in CRM with exactly the same Item Category groups as the standard and when we create a standard order (TA) in CRM, the BOM is NOT exploding.
Questions:
Is it possible to have the BOM setup only in CRM, like we try to do it?
Is it possible to use our own item category groups in CRM more is the functionality only working with ERLA and LUMF?
Is it possible to use the BOM Explosion in Service contracts as well ?
What steps are we missing to get the BOM explosion in CRM ?
Thank you for your help
Frank

Hi,
I did work on single level BOM explosion in a couple of projects. As per SAP note 549341 - FAQ: BOMs in the sales order, it is very much possible to explode multi-level BOMs.
Check this note and item category BOM explosion options.
Do not forget to reward if it helps,
Regards,
Paul Kondaveeti

Sample steps to setup BOM explosion in MRP

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