How To Fix FINS_RECON364 - Duplicate entry in table BSIS_BCK: &1 message(s)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 364

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

What causes this issue?

There are line items in table BSEG with duplicate entry in the index
table BSIS_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_RECON364 - Duplicate entry in table BSIS_BCK: &1 message(s) ?

  The SAP error message FINS_RECON364 indicates that there is a duplicate entry in the table BSIS_BCK. This table is typically used for storing line items for accounts in the General Ledger (G/L) and is part of the financial accounting module in SAP.
  Cause:
  The error usually arises due to one of the following reasons:
  
  Data Migration Issues: If data was migrated from another system or during a system upgrade, duplicate entries may have been inadvertently created.
  Incorrect Posting Logic: If there are custom programs or enhancements that post data to the BSIS_BCK table, they may not be handling duplicates correctly.
  Concurrency Issues: Multiple users or processes trying to post the same transaction simultaneously can lead to duplicate entries.
  Manual Data Entry Errors: Users may inadvertently create duplicate entries while entering data manually.
  
  Solution:
  To resolve the issue, you can take the following steps:
  
  
  Identify Duplicates:
  
  Use SQL queries or transaction codes like SE16 or SE11 to check the contents of the BSIS_BCK table for duplicate entries. You can look for entries with the same key fields (e.g., document number, fiscal year, etc.).
  
  
  
  Remove Duplicates:
  
  If duplicates are found, you may need to delete the duplicate entries. This should be done with caution and ideally in a test environment first. You can use transaction SE14 (Database Utility) to delete entries, but ensure you have a backup and understand the implications of deleting data.
  
  
  
  Check Custom Code:
  
  Review any custom programs or enhancements that interact with the BSIS_BCK table to ensure they are not causing duplicates. Implement checks to prevent duplicate postings.
  
  
  
  Review Posting Processes:
  
  Ensure that your posting processes are robust and include checks for existing entries before creating new ones. This may involve implementing locking mechanisms or using unique constraints.
  
  
  
  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 BSIS_BCK table.
  
  
  
  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:
  
  BSIS_BCK Table: This is a backup table for line items in the G/L. Understanding its structure and the fields involved can help in diagnosing issues.
  Transaction Codes: Familiarize yourself with transaction codes like SE16 (Data Browser), SE11 (Data Dictionary), and SE14 (Database Utility) for managing database entries.
  Data Consistency Checks: Regularly perform data consistency checks in your SAP system to identify and rectify issues before they lead to errors.
  
  Always ensure that you have proper backups and follow your organization's change management procedures when making changes to the database or application logic.