How To Fix MPE_CM_EFFECTIVITY079 - BOM header quantity for material &1 must be 1

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_CM_EFFECTIVITY - Message Class for Parameter Effectivity

• Message number: 079

• Message text: BOM header quantity for material &1 must be 1

What causes this issue?

BOM header quantity for material &V1& must be 1 because it is
of Complex Assembly Type Major Assemblies.

System Response

If the material type of material is identified as Major Assemblies
then the quantity of such BOM header should always be 1 because
Major Assemblies with multiple quantity is not supported.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MPE_CM_EFFECTIVITY079 - BOM header quantity for material &1 must be 1 ?

  The SAP error message MPE_CM_EFFECTIVITY079 indicates that there is an issue with the Bill of Materials (BOM) header quantity for a specific material. The error message states that the BOM header quantity must be set to 1. This typically occurs in the context of configuring or managing BOMs in SAP, particularly when dealing with configurable materials.
  Cause:
  The error is triggered when the BOM header quantity for a material is not set to 1. In SAP, BOMs are used to define the components that make up a product, and the header quantity specifies how many units of the BOM are being defined. If this quantity is anything other than 1, it can lead to inconsistencies or errors in the configuration of the material.
  Solution:
  To resolve this error, you need to check and correct the BOM header quantity for the affected material. Here are the steps to do this:
  
  
  Access the BOM:
  
  Go to the transaction code CS02 (Change BOM) or CS01 (Create BOM) in SAP.
  
  
  
  Enter Material Information:
  
  Input the material number and the plant for which the BOM is defined.
  
  
  
  Check BOM Header:
  
  Once you are in the BOM screen, check the header details. Look for the field that specifies the BOM header quantity.
  
  
  
  Set Header Quantity to 1:
  
  Change the BOM header quantity to 1 if it is currently set to a different value.
  
  
  
  Save Changes:
  
  After making the necessary changes, save the BOM.
  
  
  
  Test the Configuration:
  
  After saving, try to perform the action that previously triggered the error to ensure that it has been resolved.
  
  
  
  Related Information:
  
  BOM Types: Ensure that you are using the correct BOM type for your material. Different BOM types may have different requirements regarding header quantities.
  Configuration Settings: If you are working with configurable materials, ensure that the configuration settings are correctly defined in the system.
  Documentation: Refer to SAP documentation or help files for more detailed information on BOM management and the specific requirements for your version of SAP.
  User Authorizations: Ensure that you have the necessary authorizations to make changes to BOMs in the system.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP Notes for any known issues related to this error message.