How To Fix FIN_FB_RECON340 - Item in BSEG but missing in index tables BSID and BSAD

FIN_FB_RECON340 - Overview

• Message type: E = Error

• Message class: FIN_FB_RECON - Conversion to S/4HANA: Reconciliation

• Message number: 340

• Message text: Item in BSEG but missing in index tables BSID and BSAD

What causes this issue?

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

System Response

The system informs about this inconsistency which must be corrected in
your productive system before starting the data migration.

How to fix this error?

For more information, see
<DS:URLA.HTTPS://LAUNCHPAD.SUPPORT.SAP.COM/#/NOTES/2714344>SAP Note
2714344.</>

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FIN_FB_RECON340 - Item in BSEG but missing in index tables BSID and BSAD ?

  The SAP error message FIN_FB_RECON340 indicates that there is a discrepancy between the line items in the BSEG table and the corresponding index tables BSID (for open items) and BSAD (for cleared items). This typically occurs during financial reconciliation processes, where the system expects to find a corresponding entry in the index tables for a line item in BSEG, but it cannot.
  Causes:
  
  Data Inconsistency: This can happen due to data inconsistencies, such as incomplete postings or issues during data migration.
  Index Table Issues: The index tables (BSID and BSAD) may not have been updated correctly after a transaction was posted.
  Custom Development: Custom programs or enhancements that manipulate financial data may inadvertently cause inconsistencies.
  Database Issues: Corruption or issues in the database can lead to missing entries in the index tables.
  Archiving: If archiving processes are not correctly configured, it may lead to missing entries in the index tables.
  
  Solutions:
  
  Rebuild Index Tables: You can use transaction