How To Fix USMD2_MAC001 - Selection result is not unique: &1 results were found

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD2_MAC -

• Message number: 001

• Message text: Selection result is not unique: &1 results were found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message USMD2_MAC001 - Selection result is not unique: &1 results were found ?

  The SAP error message USMD2_MAC001 indicates that a selection operation has returned multiple results when only a single result was expected. This typically occurs in the context of data management or data migration processes, particularly when using the SAP Master Data Governance (MDG) module.
  Cause:
  The error arises when a query or selection criteria used in a process (like data validation, data replication, or data migration) results in multiple entries being found in the database, but the system expects only one unique entry. This can happen due to:
  
  Duplicate Data: There may be duplicate records in the database that match the selection criteria.
  Incorrect Selection Criteria: The criteria used to filter the data may not be specific enough to return a unique result.
  Configuration Issues: There may be issues with the configuration of the data model or the governance process that leads to ambiguity in the selection.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Review the Selection Criteria: Check the criteria used in the selection process to ensure they are specific enough to return a unique result. You may need to add additional filters or parameters.
  
  
  Check for Duplicates: Investigate the underlying data to identify any duplicate records that may be causing the issue. You can use transaction codes like SE16 or SE11 to view the relevant tables and check for duplicates.
  
  
  Data Cleansing: If duplicates are found, consider implementing data cleansing processes to remove or consolidate duplicate records. This may involve manual intervention or automated data quality tools.
  
  
  Adjust Configuration: If the issue is related to the configuration of the data model or governance process, review the settings in the MDG configuration to ensure they align with your business requirements.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific transaction or process you are working with for additional guidance.
  
  
  Seek Support: If the issue persists, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE16 (Data Browser), SE11 (Data Dictionary), and MDG-related transactions.
  SAP Notes: Check for any SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Data Governance Best Practices: Implement best practices for data governance to minimize the occurrence of duplicate records and ensure data integrity.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.