How To Fix FDM_MIRROR084 - Tab. FDM_CUST_MIRROR: external key (&1, &2, &3) exists more than once

SAP Error Message - Details

• Message type: E = Error

• Message class: FDM_MIRROR - Mirror System Messages

• Message number: 084

• Message text: Tab. FDM_CUST_MIRROR: external key (&1, &2, &3) exists more than once

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• What is the cause and solution for SAP error message FDM_MIRROR084 - Tab. FDM_CUST_MIRROR: external key (&1, &2, &3) exists more than once ?

  The SAP error message FDM_MIRROR084 indicates that there is a duplicate entry for an external key in the FDM_CUST_MIRROR table. This typically occurs in the context of Financial Data Management (FDM) when the system detects that the same external key (which could be a combination of fields like customer ID, company code, etc.) is present more than once in the table.
  Cause:
  
  Data Duplication: The most common cause of this error is that the data being imported or processed contains duplicate entries for the specified external key.
  Incorrect Data Mapping: If the mapping of external keys to internal keys is not set up correctly, it can lead to duplicates being created.
  Integration Issues: If data is being pulled from multiple sources or systems, inconsistencies can arise, leading to duplicates.
  
  Solution:
  
  
  Identify Duplicates: 
  
  Query the FDM_CUST_MIRROR table to identify the duplicate entries for the external key. You can use SQL queries to find duplicates based on the fields that make up the external key.
  Example SQL query:
  SELECT external_key_field1, external_key_field2, external_key_field3, COUNT(*)
  FROM FDM_CUST_MIRROR
  GROUP BY external_key_field1, external_key_field2, external_key_field3
  HAVING COUNT(*) > 1;
  
  
  
  
  Data Cleanup:
  
  Once duplicates are identified, you will need to decide which entries to keep and which to delete. This may involve reviewing the data to ensure that you are not losing important information.
  Use appropriate SQL commands to delete or update the duplicate entries.
  
  
  
  Review Data Import Process:
  
  Check the process that is importing or creating entries in the FDM_CUST_MIRROR table. Ensure that it is designed to handle duplicates appropriately, either by preventing them or by merging data as necessary.
  
  
  
  Adjust Mapping:
  
  If the issue is related to incorrect mapping, review the mapping configuration to ensure that it correctly reflects the relationships between external and internal keys.
  
  
  
  Testing:
  
  After making changes, test the data import or processing again to ensure that the error does not reoccur.
  
  
  
  Related Information:
  
  FDM_CUST_MIRROR Table: This table is used to store customer-related data in a mirrored format, often for integration purposes.
  External Key: This is typically a unique identifier used to link records between different systems or modules.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message, as there may be specific fixes or recommendations provided by SAP.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP documentation for further troubleshooting.