Modifying standard material type configuration provided by SAP

I was recently involved in a discussion regarding whether or not to modify sap provided material types (e.g. FERT)
My position was that SAP provided material type configuration should not be modified, instead a z-version of the standard material type should be copied over to a z-version or a y-version (FERT copied as ZFRT), configurations changes made the z-version. My position was based on the following considerations:-
Reference to the original
Possible implication at the time of future releases or upgrades - In Some of my previous projects this was a reason why the standard material type configurations were never touched
Hence I am curious to know if there a more current or correct position on this topic.

Hi Jose,
You are absolutely correct that standard material type should not be changed as you can always reference to the original if you want to create a new material type by copying the old ones. I too have seen ZFRT and FERT.
I go by creating a Z one, as I have always the option to reference the original Material Type. As the above members have already replied the same.
It is very easy to check the material type like FERT, ROH etc. However, say you have changed the settings for standard material type like FHMI, LEIH, VERP etc and you want to create a new material type by referencing any of the above, you will need to check client 000 (as referred by Jurgen) to check what Pricing control it have S or V. What Item Category is in original. What selection of views are there in original etc. you always have a better edge to check from the originals if you do not change them.

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Dear Gurus,
We are Implementing New Project.
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For Engineering goods What should be the Standard Material Type to be used.
With Regards,
PMG

Hi,
You can take material type ROH /or copy the same and make new material type with required valuation class and G/L setting.
And while making PR and PO select account assignment A-Asset and make capital PO accordingly.
Hope this will resolve your issue.
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We have a requirement to change the material type configuration from valuated to non valuated. I performed this change in sandbox and the system allows me to change the configuration.
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Has anyone done this before?
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Thanks Lakshman for the response.
If i create a new material type and make it as non-valuated then i will not be able to convert the material type using MMAM since it will give an error message about the Account category reference not being the same for both material types.
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All-
Every solution architect I have contacted has told us that itu2019s standard practice to create copies of standard SAP material types (and all other configuration) and then update configuration to make the object client specific rather than just modifying SAP standard. You do that because when SAP delivers upgrades they may update standard configuration keys and that can cause disruptions. We talked to some folks at SAP who told us the same thing.
My Client had previously agreed to this but now some of their IT resources have pushed back with their primary argument being u201Cthis hasnu2019t affected us for the last 15 years so we want to continue with what we haveu201D i.e. modifying configuration and customizing the SAP delivered material types. Theyu2019ve also found some SAP documentation that says itu2019s fine to do it either way. I donu2019t have the depth of technical knowledge to get into all of the arguments for / against this.
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You obviously can modify a lot of standard objects because the config. option is there.
The main reason not to is because they act as models e.g. what is the SAP standard model for configuration of a Traded material (in the given Solution, Country etc.). If you have copied the std and modified the Z version you can always refer back to the std if you run in to unexpected difficulties. If you've modified the std, you have no model to refer to. If you modify the std and it then doesn't do what you want or you hit an issue of some form, you pretty much have to figure out why yourself because SAP would probably charge you.
Material Types in particular involve a huge potential number of fields (900+) and complex field selection.
If you do modify a standard, at least document exactly what changes were made so you and subsequent support personnel can understand how the object has been modified. 'Small' modifications of objects you may well have no future issue with, 'big' modifications of big objects could well come back to haunt you.
Regards,
Nick

Material Type Configuration

Hi All,
Can you tell me what are the SPRO configurations required for creation of new material type in MM
Edited by: Csaba Szommer on Oct 17, 2011 12:51 PM

Hi
1. you can decide wether your material number external or internal by checking External no w/o check field.. if it is checked external number range available for that material
2.Special material type for your type of material weather it is pile line or manufacturer
3.interna/external purchase orders
it decide weather External/Internal purchase order or allowed or not for that perticular material
4.classification for your batch..
if batch availble for your material you can enter here
5.valuation will control your accounting view
price control is mandatoryor not.. if it is checked you can set your default value for material like standard price or moving avg price
6.Quantity/value updating is for your material stock and value updation
hope it will help you.. please go through this link..
http://help.sap.com/saphelp_46c/helpdata/en/ff/515afd49d811d182b80000e829fbfe/content.htm
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/LOMDMM/LOMDMM.pdf
http://www.sap-img.com/materials/sap-mm-configuration-tips.htm
Thanks...

Pro's and Con's to using Copies of Standard Material Types

Hi
We are looking for the pro's and con's of using copies of standard SAP material types for my company. We are a consumer goods company and looking to see if there are drawbacks and benefits when it comes time to upgrade SAP. Also what industry standards are out there for when we change / add views to standard SAP material types.
Regards,
Josh

there are no real pros and cons - just philosophy
We're using the SAP given material types, even adjusted to our needs, already for many years from 3.1 to 6.3 release and had never any issue with hotpackages or ith release changes.
We are using as well many own material types created by copy of SAP material types.
the only issues I know are, that the users need some time to understand which type to use if the description appears twice.
(Remember, it is a personal setting if keys are shown in dropdown lists, and I know many user who do not display the keys)

Changing standard material types

Hello All,
We are using ECC 6.0
I want to change few settings for standard materials types like FERT, HALB, ROH and HAWA.
For example Standard FERT does not have Purchasing view enabled but I enabled it.
Will these settings be reset when we go for upgrade in future?
Thanks
George

Hi,
You can change settings related to std config, depending upon your clients requirement using T code OMS2. In that case once you make changes in std config then all materials are created with purchasing view.
But it will reset after you upgrade your system in future as these are standard SAP settings.
As our collegue mentioned it is better to create another material type instaed of changing std material type.
Hope this will resolve your issue.
Best Regards,
Avinash.

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Since we have modified the standard message type and i dont think the standard mapping name will work for this ?? im i correct??
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Thank you.
Regards
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Hi Chirag,
Nice to see you back in action
I will be doing the below steps in BIC.. and let me know if anything is wrong in this.
i will Create the Project name as " Project_Orders_Modified" in BIC tool
1) i will modify the std msg xsd in txt file and Under my project name i will import it under EDIFACT. Save it and i will export it and save it in folder as...
 msg_DT_Orders.xml
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source : msg_DT_Orders.xml
Target : msg_XML_DT_orders.xml
I will import it into My Project " Project_Orders_Modified"
3) I will create the CreateMappingEDI to XML by giving
source : msg_DT_Orders.xml
Target : map_E2X_DT_orders.xml
I will import it into My Project " Project_Orders_Modified"
Then I will run the map.. and checks if it is working fine.
If yes, i will import my mapping into Active mappings and i will generate SDA file and will deploy into XI .
Finally i will use the mapping name " map_E2X_DT_orders " in AS2 Module tab.
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Hi,
I have created one material in MM01.
Selected material type is Rawmaterial,but I need to change this into finished goods type.
How to change the material type and aswell as valuation class for that particular material.

Hi
Before changing material type please ensure that there are no open PR/PO/contracts /Scheduling agreements .In case if any one of them exists then you need to set deletion indicator for all such open PR/PO/contracts /Scheduling agreements .
First Goto Transcation code MMAM - This tcode is for changing the material type from ROH to FERT and not valuation class.
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If you want to change the valuation class, there may be because of one or more of the following already exist for the material:
1) Valuated stocks in the current period or in the previous period.
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3) Production orders which a goods movement has already taken place.
For this first you have to do the following:
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c) Post the stocks of the material back to their original account.
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If production orders exist for which a goods movement has already taken place, you can only change the valuation class if you first set the status of the production orders to deleted
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Regards

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Hi.
We are planning to implement SEM-BCS ? From this forum and SAP documentation( help.sap.com and service.sap.com), I just found that integration with ECC is total records(RFD) and some master data. Unfortunately, I could't find any further integration point. AFD such as inventory balance, Gross profit etc seems to be extracted from ECC such as FI, MM or CO module. But there is no mention in SAP documentation.
I think I missed good integration point SAP provided.
Otherwise, We have to develop the some program to extract AFD. Is my understanding correct?
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The main problem with automatical load of AFD is the strict dependence on the ECC/R/3 configurations that might differ very significantly.
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Thanks!!!
Regards
Karan

Hi
Have you thought of using Transaction variant through transaction code SHD0,
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Regards
Jitesh

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Here we are configuring the service scenario.
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ROH is usually a material type that is supposed to be consumed in production.
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hi
these lins might be help ful to you:
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/9e60be90-0201-0010-49b0-f57cfeeb5530
http://help.sap.com/saphelp_crm40/helpdata/en/f8/9d7c3e8a5cd064e10000000a114084/frameset.htm
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Modifying standard material type configuration provided by SAP

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