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

FINS_RECON371 - Overview

• 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