How To Fix FINS_RECON359 - &1: Duplicate entry in table BSAK_BCK

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 359

• Message text: &1: Duplicate entry in table BSAK_BCK

What causes this issue?

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

System Response

How to fix this error?

Details about this issue (duplicate entry in index table) can be found
in the summary at the end of the application log (message number 369).

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_RECON359 - &1: Duplicate entry in table BSAK_BCK ?

  The SAP error message FINS_RECON359 with the description "Duplicate entry in table BSAK_BCK" typically indicates that there is a duplicate entry in the BSAK_BCK table, which is used for storing accounting documents that have been cleared. This error can occur during processes such as reconciliation, clearing, or when trying to post transactions that involve clearing accounts.
  Cause:
  
  
  Duplicate Entries: The primary cause of this error is the presence of duplicate entries in the BSAK_BCK table. This can happen due to:
  
  Incorrect data uploads or migrations.
  Manual entries that inadvertently create duplicates.
  Issues during the clearing process where the same document is processed multiple times.
  
  
  
  Data Integrity Issues: There may be underlying data integrity issues in the database that lead to duplicates being created.
  
  
  Solution:
  
  
  Identify Duplicates: 
  
  Use SQL queries to check for duplicate entries in the BSAK_BCK table. You can run a query like:
  SELECT * FROM BSAK_BCK
  GROUP BY FIELD1, FIELD2, ... -- Replace with relevant fields
  HAVING COUNT(*) > 1;
  
  This will help you identify which entries are duplicated.
  
  
  
  Remove Duplicates: 
  
  Once identified, you can either delete the duplicate entries or correct them based on your business requirements. Be cautious with deletions to avoid losing important data.
  If you are unsure about deleting records, consult with your SAP Basis or functional team.
  
  
  
  Check for Data Consistency: 
  
  After resolving duplicates, ensure that the data in the BSAK_BCK table is consistent with other related tables (like BSAK, BKPF, etc.).
  
  
  
  Review Custom Programs: 
  
  If you have custom programs or enhancements that interact with the BSAK_BCK table, review them to ensure they are not causing duplicates.
  
  
  
  Consult SAP Notes: 
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide guidance on handling duplicates in the BSAK_BCK table.
  
  
  
  Testing: 
  
  After making changes, perform thorough testing to ensure that the issue is resolved and that no new duplicates are being created.
  
  
  
  Related Information:
  
  BSAK_BCK Table: This table is part of the SAP Financial Accounting (FI) module and is used for storing cleared items. Understanding its structure and relationships with other tables can help in troubleshooting.
  Transaction Codes: Familiarize yourself with transaction codes like FB03 (Display Document), FBL1N (Vendor Line Item Display), and FBL3N (G/L Account Line Item Display) to analyze the entries related to the error.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance.