How To Fix FDM_MIRROR011 - FI customer master data already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: FDM_MIRROR - Mirror System Messages

• Message number: 011

• Message text: FI customer master data already exists

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDM_MIRROR011 - FI customer master data already exists ?

  The SAP error message FDM_MIRROR011 indicates that there is an attempt to create or mirror a Financial (FI) customer master record that already exists in the system. This error typically arises during data migration or when integrating systems where duplicate entries are not allowed.
  Cause:
  
  
  Duplicate Entry: The primary cause of this error is that the customer master data you are trying to create already exists in the system. This could be due to:
  
  Manual entry of the same customer data.
  Data migration processes that attempt to insert existing records.
  Integration processes that do not check for existing records before attempting to create new ones.
  
  
  
  Data Consistency Issues: There may be inconsistencies in the data being imported or mirrored, leading to conflicts with existing records.
  
  
  Solution:
  
  
  Check for Existing Records: Before attempting to create a new customer master record, check the database for existing records using transaction codes like FD03 (Display Customer) or SE16N (Data Browser) to search for the customer ID or name.
  
  
  Update Existing Records: If the customer already exists and you need to update their information, use transaction FD02 (Change Customer) instead of trying to create a new record.
  
  
  Data Cleansing: If you are migrating data, ensure that your data is cleansed and deduplicated before the migration process. This can involve:
  
  Running scripts to identify duplicates.
  Merging records where necessary.
  
  
  
  Error Handling in Integration: If this error occurs during an integration process, implement error handling to check for existing records before attempting to create new ones. This can be done through:
  
  Pre-checks in the integration logic.
  Using APIs that support upsert operations (update or insert).
  
  
  
  Consult Documentation: Review SAP documentation or consult with your SAP support team for specific guidelines related to your version of SAP and the customer master data management.
  
  
  Related Information:
  
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  FD01 (Create Customer)
  FD02 (Change Customer)
  FD03 (Display Customer)
  SE16N (Data Browser)
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to customer master data management.
  
  
  Data Migration Tools: If you are using tools like SAP Data Services or LSMW (Legacy System Migration Workbench), ensure that they are configured correctly to handle duplicates.
  
  
  Master Data Governance: Consider implementing Master Data Governance (MDG) practices to maintain data quality and prevent duplicates in the future.
  
  
  By following these steps, you should be able to resolve the FDM_MIRROR011 error and ensure that your customer master data is managed effectively.