How To Fix USMD_CMM037 - Key component &1 has been specified more than once

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD_CMM -

• Message number: 037

• Message text: Key component &1 has been specified more than once

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message USMD_CMM037 - Key component &1 has been specified more than once ?

  The SAP error message USMD_CMM037 indicates that a key component has been specified more than once in a certain context, typically during data migration or data management processes in SAP Master Data Governance (MDG). This error usually arises when there are duplicate entries for a key component in the data being processed.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that the same key component (e.g., a material number, customer ID, etc.) has been included multiple times in the data set being processed.
  Incorrect Data Mapping: If the data mapping or transformation logic is not correctly set up, it may lead to the same key component being processed multiple times.
  Data Import Issues: During data import or migration, if the source data contains duplicates, this error can occur.
  
  Solution:
  
  Check for Duplicates: Review the data set you are trying to process and ensure that there are no duplicate entries for the key component. You can use tools like Excel or SQL queries to identify duplicates.
  Data Cleansing: If duplicates are found, you will need to clean the data by removing or consolidating duplicate entries before reprocessing.
  Review Data Mapping: Ensure that the data mapping and transformation rules are correctly defined to prevent duplicates from being created during the data processing.
  Use Unique Identifiers: If applicable, ensure that each key component has a unique identifier to avoid conflicts during processing.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines related to the data model you are working with in MDG.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  MDG Configuration: Review the configuration settings in SAP MDG to ensure that they are set up correctly for the data you are working with.
  Data Migration Tools: If you are using data migration tools (like LSMW, BODS, etc.), ensure that they are configured correctly to handle duplicates.
  Testing: After making changes, conduct thorough testing to ensure that the issue is resolved and that no new errors are introduced.
  
  If the problem persists after following these steps, consider reaching out to SAP support or consulting with an SAP expert for further assistance.