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

FINS_RECON364 - Overview

• 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.

FINS_RECON364 - Details

• 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