How To Fix FINS_RECON365 - Duplicate entry in table BSAS_BCK: &1 message(s)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 365

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

What causes this issue?

There are line items in table BSEG with duplicate entry in the index
table BSAS_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_RECON365 - Duplicate entry in table BSAS_BCK: &1 message(s) ?

  The SAP error message "FINS_RECON365 Duplicate entry in table BSAS_BCK: &1 message(s)" typically indicates that there is a duplicate entry in the BSAS_BCK table, which is used for storing accounting document information in the SAP system. This error can occur during various financial processes, such as posting documents or running reconciliation reports.
  Cause:
  
  
  Duplicate Entries: The primary cause of this error is the presence of duplicate entries in the BSAS_BCK table. This can happen due to:
  
  Incorrect data entry or posting processes.
  Issues during data migration or system upgrades.
  Concurrent postings that lead to race conditions.
  
  
  
  Data Integrity Issues: There may be underlying data integrity issues in the database that lead to duplicates.
  
  
  Custom Programs or Enhancements: If there are custom programs or enhancements that interact with the BSAS_BCK table, they may inadvertently create duplicates.
  
  
  Solution:
  
  
  Identify Duplicates: Use SQL queries to identify the duplicate entries in the BSAS_BCK table. You can run a query like:
  SELECT * FROM BSAS_BCK
  GROUP BY <relevant fields>
  HAVING COUNT(*) > 1;
  Replace <relevant fields> with the fields that define uniqueness for your entries.
  
  
  Remove Duplicates: Once identified, you can remove the duplicate entries. However, be cautious and ensure that you have backups and that you understand the implications of deleting data from the database.
  
  
  Check Posting Logic: Review the posting logic and processes to ensure that they are not creating duplicates. This may involve checking custom code, user exits, or BAPIs that are used for posting.
  
  
  Data Consistency Checks: Run data consistency checks in the SAP system to identify and resolve any inconsistencies in the financial data.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide guidance on how to resolve it.
  
  
  Engage SAP Support: If the issue persists or if you are unsure about how to proceed, consider reaching out to SAP Support for assistance.
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like SE11 (Data Dictionary) to view the structure of the BSAS_BCK table and SE16 (Data Browser) to view the data.
  Backup: Always ensure that you have a backup of your data before making any changes to the database.
  Testing: After resolving the issue, conduct thorough testing to ensure that the problem does not recur and that the financial processes are functioning correctly.
  
  By following these steps, you should be able to address the "Duplicate entry in table BSAS_BCK" error effectively.