How To Fix FINS_RECON352 - Item in BSEG without FAGLBSIS_BCK/FAGLBSAS_BCK: &1 message(s)

FINS_RECON352 - Overview

• Message type: E = Error

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

• Message number: 352

• Message text: Item in BSEG without FAGLBSIS_BCK/FAGLBSAS_BCK: &1 message(s)

What causes this issue?

There are line items in table BSEG which are neither available in the
index table FAGLBSIS_BCK nor 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.

FINS_RECON352 - Details

• The SAP error message FINS_RECON352 indicates that there is an issue with the reconciliation of financial documents in the BSEG table, specifically that there are items in BSEG that do not have corresponding entries in the FAGLBSIS_BCK or FAGLBSAS_BCK tables. This can occur during the reconciliation process when the system expects to find backup entries for certain financial documents but cannot locate them.
  
  Cause:
  
  Missing Backup Entries: The primary cause of this error is that the system is unable to find the necessary backup entries in the FAGLBSIS_BCK or FAGLBSAS_BCK tables for the items in the BSEG table.
  Data Migration Issues: If data was migrated from an older system or if there were issues during a system upgrade, it could lead to inconsistencies in the financial data.
  Incorrect Configuration: There may be configuration issues in the financial accounting settings that prevent the proper creation of backup entries.
  Posting Errors: Errors during posting transactions can lead