How To Fix MK048 - Entry for key characteristic &1 and material &2 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: MK - Mass Handling in the Material Master

• Message number: 048

• Message text: Entry for key characteristic &1 and material &2 already exists

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MK048 - Entry for key characteristic &1 and material &2 already exists ?

  The SAP error message MK048 indicates that there is an attempt to create or modify a record in the system where a key characteristic for a specific material already exists. This typically occurs in the context of material master data, particularly when dealing with characteristics and classifications in the SAP system.
  Cause:
  The error occurs when:
  
  You are trying to assign a characteristic to a material that has already been assigned.
  There is a duplicate entry for the combination of the characteristic and the material in the classification system.
  The system enforces uniqueness for the combination of characteristics and materials, and the entry you are trying to create violates this rule.
  
  Solution:
  To resolve the MK048 error, you can take the following steps:
  
  
  Check Existing Entries:
  
  Use transaction codes like MM03 (Display Material) or CL03 (Display Class) to check if the characteristic is already assigned to the material.
  Look for the specific characteristic and material combination that is causing the error.
  
  
  
  Remove Duplicate Entries:
  
  If you find that the characteristic is already assigned to the material, you may need to remove the duplicate entry. This can be done using transaction CL02 (Change Class) or MM02 (Change Material).
  
  
  
  Modify the Characteristic Assignment:
  
  If you need to change the characteristic for the material, ensure that you are modifying the correct entry and that it does not conflict with existing assignments.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation or help files related to material classification and characteristics to ensure you are following the correct procedures.
  
  
  
  Check Authorization:
  
  Ensure that you have the necessary authorizations to make changes to material master data and classifications.
  
  
  
  Contact Support:
  
  If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), MM03 (Display Material), CL01 (Create Class), CL02 (Change Class), and CL03 (Display Class).
  Material Master Data: Understanding the structure and management of material master data in SAP is crucial for troubleshooting issues related to characteristics and classifications.
  SAP Notes: Check SAP Notes for any known issues or patches related to the MK048 error message.
  
  By following these steps, you should be able to identify the cause of the MK048 error and implement a solution to resolve it.