How To Fix UGMD8101 - Changing &1 causes duplicate keys &2

SAP Error Message - Details

• Message type: E = Error

• Message class: UGMD8 - Change Management

• Message number: 101

• Message text: Changing &1 causes duplicate keys &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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message UGMD8101 - Changing &1 causes duplicate keys &2 ?

  The SAP error message UGMD8101 indicates that an attempt to change a specific entry (denoted as &1) in a database table or structure is resulting in duplicate keys (denoted as &2). This typically occurs when the system detects that the change you are trying to make would violate the uniqueness constraint of the key fields in the database table.
  Cause:
  
  Duplicate Key Violation: The primary cause of this error is that the change you are trying to make would result in two or more records having the same key values, which is not allowed in a database that enforces unique constraints on key fields.
  Data Integrity Issues: There may be existing records in the database that already have the same key values as the new values you are trying to set.
  Incorrect Data Entry: The data being entered may not be validated properly, leading to attempts to create or modify records with duplicate keys.
  
  Solution:
  
  Check Existing Records: Before making changes, check the existing records in the database to see if the key values you are trying to set already exist. You can do this by querying the relevant table.
  Modify Key Values: If you find that the key values you are trying to use are already in use, consider modifying them to ensure they are unique.
  Data Validation: Implement data validation checks in your application or process to prevent users from entering duplicate key values.
  Consult Documentation: Review the relevant SAP documentation or data model to understand the key constraints and ensure compliance with them.
  Error Handling: Implement error handling in your application to catch this error and provide meaningful feedback to users, guiding them on how to resolve the issue.
  
  Related Information:
  
  Transaction Codes: Depending on the context of the error, you may be using specific transaction codes (e.g., SE11 for data dictionary, SE16 for table display) to view or modify data.
  Database Tables: Identify the specific database table associated with the error to understand its structure and constraints.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message, as there may be updates or fixes provided by SAP.
  Support: If the issue persists and you cannot resolve it, consider reaching out to your SAP support team or consulting with SAP community forums for additional assistance.
  
  By following these steps, you should be able to identify the cause of the UGMD8101 error and implement a solution to resolve it.