How To Fix FIN_FB_RECON354 - Duplicate entry in table BSIS

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 354

• Message text: Duplicate entry in table BSIS

What causes this issue?

There are line items in table BSEG with duplicate entry in the index
table BSIS.

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_RECON354 - Duplicate entry in table BSIS ?

  The SAP error message FIN_FB_RECON354, which indicates a "Duplicate entry in table BSIS," typically arises during financial postings or reconciliations. The BSIS table is used to store line items for accounts in the General Ledger, and a duplicate entry suggests that there is an attempt to post a transaction that already exists in this table.
  Causes:
  
  Duplicate Posting: The most common cause is that a transaction has been posted more than once, either manually or through an automated process.
  Data Migration Issues: If data has been migrated from another system, there may be duplicates due to improper data cleansing or transformation.
  Incorrect Configuration: Configuration settings in the system may allow for duplicate entries under certain conditions.
  User Error: Users may inadvertently attempt to post the same transaction multiple times.
  
  Solutions:
  
  
  Identify Duplicate Entries:
  
  Use transaction codes like SE16 or SE11 to access the BSIS table and identify the duplicate entries. You can filter by document number, company code, and fiscal year to find the duplicates.
  
  
  
  Delete or Adjust Duplicates:
  
  If duplicates are found, you may need to delete or adjust the duplicate entries. This can be done through transaction codes like FB08 (to reverse a document) or by using the appropriate accounting entries to correct the issue.
  
  
  
  Review Posting Procedures:
  
  Ensure that the posting procedures are clear and that users are trained to avoid duplicate postings. Implement checks in the process to prevent duplicates.
  
  
  
  Data Cleansing:
  
  If the issue arose from data migration, perform a data cleansing exercise to remove duplicates from the source data before migration.
  
  
  
  Consult SAP Notes:
  
  Check for any relevant SAP Notes that may address this specific error or provide guidance on handling duplicates in the BSIS table.
  
  
  
  System Configuration:
  
  Review the configuration settings in the Financial Accounting module to ensure that they are set up correctly to prevent duplicate postings.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as FB03 (Display Document), FB08 (Reverse Document), and SE16 (Data Browser).
  SAP Support: If the issue persists, consider reaching out to SAP support for assistance, especially if it involves complex configurations or system behavior.
  Documentation: Review SAP documentation and community forums for additional insights and solutions shared by other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the FIN_FB_RECON354 error and implement a solution to resolve it.