How To Fix MDG_BS_MAT_UI120 - Material &1 already exists; Material ID was changed back to &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MDG_BS_MAT_UI - Material Display (Single Maintenance)

• Message number: 120

• Message text: Material &1 already exists; Material ID was changed back to &2

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 MDG_BS_MAT_UI120 - Material &1 already exists; Material ID was changed back to &2 ?

  The SAP error message MDG_BS_MAT_UI120 indicates that there is an attempt to create or change a material in the Master Data Governance (MDG) system, but the material ID being used already exists in the system. This error typically occurs during the creation or modification of material master data when the system detects a conflict with an existing material ID.
  Cause:
  
  Duplicate Material ID: The primary cause of this error is that the material ID you are trying to use is already assigned to another material in the system.
  Data Entry Error: There may have been a mistake in entering the material ID, leading to an attempt to create a duplicate.
  System Configuration: The system may be configured in a way that does not allow for certain material IDs to be reused or modified.
  
  Solution:
  
  Check Existing Material IDs: Verify if the material ID you are trying to use already exists in the system. You can do this by searching for the material in the material master data.
  Use a Different Material ID: If the material ID is indeed taken, you will need to choose a different, unique material ID for your new material.
  Review Change Requests: If you are modifying an existing material, ensure that you are using the correct material ID and that the changes you are trying to make are valid.
  Consult with Your Team: If you are unsure about the material IDs in use, consult with your colleagues or the data governance team to clarify which IDs are available for use.
  Check for System Configuration: If you believe the error is due to system configuration, consult with your SAP Basis or MDG configuration team to ensure that the settings are correct.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like MM03 (Display Material), MM02 (Change Material), or MM01 (Create Material) to manage material master data.
  MDG Configuration: Understanding the configuration settings in MDG can help prevent such errors. This includes settings related to material ID assignment and validation rules.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  User Authorization: Ensure that you have the necessary authorizations to create or modify material master data in the MDG system.
  
  By following these steps, you should be able to resolve the error and successfully manage your material master data in SAP MDG.