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Mass Update of BOM by CS20 or CEWB


This document explains how we can do the mass update for a BOM.I feel that this is a basic question asked in the forum for many times .

Massly we can update a Existing BOM by CS20 OR CEWB Transaction

1. Tcode CS20

First select relevant option 1) user wants change item data

2) Delete material

3) Add Material

4) Add Document

5) Add class


After that you can update following field  Quantity

costing relevancy indicator
Bulk material

Item Text

But it is difficult to remove costing relevancy  indicator through CS20 if it is defined as blank in the system .

For that process we will use another Tcode CEWB

Step 1

Give current working area as  SAP_ITEM


Step 2

Go to item tab in the component field give the component code ( for which user wants to do the changes in all Bom)

click on Load BOMS & Tasklists Data.


Step 3

Select Bom for which user wants to do the changes & click on Edit/Lock Button


Step 4

After that Field will became Editable user have to change the fields & save


Now BILL OF MATERIAL has changed as per requirement massly.

Thanks & Reagrds

Sandeep Kumar Praharaj

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  • Dear Sandeep,

    This document cover only one scenario of material replacement. Can you please explain mass addition of material.


    Muhammad Umar

  • Dear Sir

    Very good explanation to the topic.

    But is there any way that I can change same for all line items in a single shot?

    As of now, I can change 9 entries at a time. And there are more than 10k+ items.

    Please help.



  • Dear Mr Sandeep,

    I used Tocde CEWB to change materia item and quantiy, but  it’s has an error: “Generation not supported for change object” when I click on Edit/Clock button. How can I fix it?

    Another way, I click 2 columm “component” and “quantity”. Then, I  input new value but the system respond ” 0 of 1 item change”. Can you explaind for me?


    Thanks very much,

    Xung Cong Ho

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  • Sir,

    is there any similar mass tool is available in EWMS for changing pack spec/updation.

    facing problem in changing Auxiliary packing material.


  • Dear Sandeep,
    I have an issue with CS20 – whilst replacing a component in a large number of BOM’s, for some of the components the quantity is being vanished.
    Is this some customizing setup per material type, and how can I handle it?