How To Fix FINS_RECON371 - Duplicate entry in table FAGLBSAS_BCK: &1 message(s)

SAP Error Message - Details

• Message type: E = Error

• Message class: FINS_RECON - SAP S/4HANA Finance Migration: Reconciliation

• Message number: 371

• Message text: Duplicate entry in table FAGLBSAS_BCK: &1 message(s)

What causes this issue?

There are line items in table BSEG with duplicate entry in the index
table FAGLBSAS_BCK.

System Response

The system informs about this inconsistency which has to be corrected in
your productive system before starting the data migration.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FINS_RECON371 - Duplicate entry in table FAGLBSAS_BCK: &1 message(s) ?

  The SAP error message FINS_RECON371 indicates that there is a duplicate entry in the table FAGLBSAS_BCK. This table is typically used for storing backup data related to the General Ledger (GL) in SAP. The error suggests that during a reconciliation or posting process, the system has detected that an entry already exists in this table, which violates the uniqueness constraint.
  Cause:
  
  Duplicate Data Entry: The most common cause of this error is that the same financial document or entry is being processed multiple times, leading to a conflict in the database.
  Data Migration Issues: If data was migrated from another system or during a system upgrade, it is possible that duplicate entries were created inadvertently.
  Concurrency Issues: If multiple users or processes are trying to post the same entry simultaneously, it can lead to duplicates.
  Custom Code or Enhancements: If there are custom programs or enhancements that manipulate financial data, they might not be handling duplicates correctly.
  
  Solution:
  
  
  Identify Duplicates: Use SQL queries or SAP transaction codes (like SE16 or SE11) to check the FAGLBSAS_BCK table for duplicate entries. You can look for entries with the same document number, fiscal year, and other relevant fields.
  Example SQL query:
  SELECT * FROM FAGLBSAS_BCK
  WHERE <conditions to identify duplicates>;
  
  
  Remove Duplicates: Once identified, you can either delete the duplicate entries or correct them, depending on your business requirements. Be cautious with deletions and ensure you have backups.
  
  
  Check Posting Logic: Review the logic in your posting programs or transactions to ensure that they are not attempting to post the same entry multiple times.
  
  
  Review Data Migration Processes: If the issue arose after a data migration, review the migration scripts or processes to ensure they are not creating duplicates.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide guidance on handling it.
  
  
  System Configuration: Ensure that your system configuration is set up correctly to prevent duplicate entries. This may involve reviewing settings related to document numbering or posting periods.
  
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE16 (Data Browser) or SE11 (Data Dictionary) to view the contents of the FAGLBSAS_BCK table.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if it involves complex customizations or configurations.
  Documentation: Review SAP documentation related to General Ledger accounting and reconciliation processes for best practices and guidelines.
  
  Always ensure that you have proper backups and a testing environment before making changes to the database or system configurations.