Skip to Content
author's profile photo Former Member
Former Member

Alternate or interchangeable items

Hi all

I have a scenario which needs an urgent solution.

I have 2 materials X and Y where X is interchangeable with Y but Y is not interchangeable with X.

Customer A gives a requirement of X. If stock of X or Y is there, then while MRP the requirement should be netted and a propcurement proposal for X has to be raised. But if a customer requirement for Y is raised, then MRP should read only the stock of Y and if required a procurement proposal for Y only should be raised.

Is this possible and if so how?

Points assured for the helpful answer.



Add a comment
10|10000 characters needed characters exceeded

Related questions

2 Answers

  • Best Answer
    Posted on Apr 10, 2008 at 06:33 PM

    Hi Chandra,

    For your 2 materials X and Y (where X is interchangeable with Y but Y is not interchangeable with X) the possible solution could be using "Alternative Item Groups" in the Bill of Material.

    You can maintain alternate item data in BOM Item detail screen, General data tab.


    Enter Priority, Strategy, and Usage Probability in the Alternate Item Group.

    MRP plans the alternative items according to usage probability. Alternative item is only planned if the usage probability is at least 1%.

    The priority of an item within an alternative item group determines the sequence in which material components are reserved in the production order.

    2 withdrawel strategies are available:

    1. Withdrawal according to usage probability -manual changes possible

    2. Withdrawal if availability is 100%

    How to maintain the alternate Items described in following link.


    Say for e.g you have defined the usage probability for X is 60% and Y is 40% then system will plan for X 60% & Y - 40 %.

    If your withdrawel strategy says based on availability then which ever material 100% available at the time of GI, system will propose the component either X ot Y..

    All the above settings are only for Componet "X"

    Do not define Alternate Item group for "Y", system will not propose any alternate item for Y.

    You may be using X in no. of assemblies then in all the assemblies add the component Y as well and maintain the alternate Item groups.

    In all the asseblies where in only Y is to be used then do not add X in the BOM..

    Go through the link given above..

    Revert for further discussion..

    All the best



    Add a comment
    10|10000 characters needed characters exceeded

    • Former Member

      Hi Siva

      Thank you for your efforts in answering the question. But as per my requirement I cannot give any usage probabilites. once i give the probability MRP will plan the reqmts according to that. and if i dont give any it doesnt plan for any of the mateirals.

      I wnat the availability check at the time of MRP and then a procurement proposal accordingly not at the material withdrawal time.



  • author's profile photo Former Member
    Former Member
    Posted on Apr 11, 2008 at 04:28 AM

    hi chandra,

    ur current scenario looks complicated and i think the only way to get solution is to contact SAP direcly and cross check. as far as my knowledge goes there is something called EMS (electroning manufacturing services). pls check this with them the ways of executing.

    pls dont reward any points for this answer.


    Add a comment
    10|10000 characters needed characters exceeded

    • Hi,

      Ok.. Right now this is what I have (previous posts)..

      Hope our other group members will add some value to the discussion..

      Infact I am also eager to know the result..

      We've used the same functionality earlier as explained above (Export - Costly ones and Domestic ones)

      All th best



Before answering

You should only submit an answer when you are proposing a solution to the poster's problem. If you want the poster to clarify the question or provide more information, please leave a comment instead, requesting additional details. When answering, please include specifics, such as step-by-step instructions, context for the solution, and links to useful resources. Also, please make sure that you answer complies with our Rules of Engagement.
You must be Logged in to submit an answer.

Up to 10 attachments (including images) can be used with a maximum of 1.0 MB each and 10.5 MB total.