How To Fix WU779 - Variant &: Allocation unit can only be maintained in generic matl &

SAP Error Message - Details

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 779

• Message text: Variant &: Allocation unit can only be maintained in generic matl &

What causes this issue?

The allocation unit for a variant was changed.

System Response

The allocation units for variants are adopted from the related generic
material.

How to fix this error?

Maintain the allocation unit in the generic material.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WU779 - Variant &: Allocation unit can only be maintained in generic matl & ?

  The SAP error message WU779 indicates that there is an issue with maintaining an allocation unit for a variant in a generic material. This typically occurs in the context of variant configuration (VC) in SAP, where materials can have multiple variants based on different characteristics.
  Cause:
  The error message "WU779 Variant &: Allocation unit can only be maintained in generic matl &" usually arises due to one of the following reasons:
  
  
  Generic Material Configuration: The allocation unit is being attempted to be maintained directly on a variant material instead of the generic material. In SAP, allocation units are typically associated with the generic material, not the specific variants.
  
  
  Incorrect Master Data Setup: The master data for the material may not be set up correctly, leading to issues when trying to maintain allocation units.
  
  
  Authorization Issues: There may be authorization restrictions preventing the user from maintaining allocation units for the generic material.
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Maintain Allocation Unit in Generic Material:
  
  Navigate to the generic material (the base material for the variants).
  Go to the relevant transaction (e.g., MM02 for material master) and maintain the allocation unit there.
  
  
  
  Check Material Master Data:
  
  Ensure that the material master data for both the generic material and the variants is correctly configured.
  Verify that the allocation unit is defined in the generic material's master data.
  
  
  
  Review User Authorizations:
  
  Check if the user has the necessary authorizations to maintain allocation units for the generic material. If not, consult with your SAP security team to adjust the authorizations.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources related to variant configuration and allocation units for further insights.
  
  
  
  SAP Notes and Support:
  
  If the issue persists, check for any relevant SAP Notes that might address this specific error. You can search the SAP Support Portal for updates or patches that may resolve the issue.
  
  
  
  Related Information:
  
  Variant Configuration (VC): Understand how variant configuration works in SAP, including the relationship between generic materials and their variants.
  Material Master Data: Familiarize yourself with the structure of material master data in SAP, including views related to allocation units.
  SAP Community: Engage with the SAP Community forums for additional insights and experiences from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the WU779 error and successfully maintain the allocation unit for your materials.