How To Fix /ACCGO/MCK_NEGO003 - Specific material is already shown for selected generic material

SAP Error Message - Details

• Message type: E = Error

• Message class: /ACCGO/MCK_NEGO -

• Message number: 003

• Message text: Specific material is already shown for selected generic material

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ACCGO/MCK_NEGO003 - Specific material is already shown for selected generic material ?

  The SAP error message /ACCGO/MCK_NEGO003 indicates that a specific material is already assigned to the selected generic material in the context of material management or procurement processes. This error typically arises in scenarios involving the use of generic materials, where a specific material is expected to be linked to a generic one, but the system detects that the specific material is already associated with another generic material.
  Cause:
  
  Duplicate Assignment: The specific material you are trying to assign is already linked to a different generic material.
  Incorrect Configuration: There may be a configuration issue in the material master data where the relationships between specific and generic materials are not set up correctly.
  Data Integrity Issues: There could be inconsistencies in the material master data that lead to this error.
  
  Solution:
  
  
  Check Existing Assignments:
  
  Go to the material master data for the specific material and check which generic material it is currently assigned to. You can do this using transaction code MM03 (Display Material).
  If the specific material is already linked to a different generic material, you will need to decide whether to change the assignment or use a different specific material.
  
  
  
  Change Assignment:
  
  If you need to change the assignment, you can do this using transaction code MM02 (Change Material). Make sure to remove the existing assignment before linking it to the new generic material.
  
  
  
  Review Configuration:
  
  Check the configuration settings in the material management module to ensure that the relationships between generic and specific materials are correctly defined.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources related to material management and generic materials for additional guidance on how to manage these relationships.
  
  
  
  Data Cleanup:
  
  If there are data integrity issues, consider running a data cleanup process to resolve any inconsistencies in the material master data.
  
  
  
  Seek Help from SAP Support:
  
  If the issue persists and you cannot resolve it, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  
  
  Related Information:
  
  Material Master Data: Understanding how material master data is structured in SAP is crucial. Familiarize yourself with the different views and how generic and specific materials are related.
  Transaction Codes: Common transaction codes related to material management include:
  
  MM01 - Create Material
  MM02 - Change Material
  MM03 - Display Material
  MM04 - Display Material Changes
  
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.