How To Fix FR646 - Table BSEG is not unclustered; contact your system administrator

SAP Error Message - Details

• Message type: E = Error

• Message class: FR - Messages for FI Reporting

• Message number: 646

• Message text: Table BSEG is not unclustered; contact your system administrator

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FR646 - Table BSEG is not unclustered; contact your system administrator ?

  The SAP error message FR646 indicates that the table BSEG (which is the line item table for accounting documents) is not unclustered. This typically occurs in systems where the BSEG table is still using a clustered table format, which can lead to issues when trying to perform certain operations, such as archiving or data extraction.
  Cause:
  
  Clustered Table: In older versions of SAP, BSEG was implemented as a clustered table. This means that the data is stored in a way that combines multiple records into a single table entry, which can complicate data access and manipulation.
  System Configuration: The system may not have been properly configured to uncluster the BSEG table, or the necessary steps to migrate to an unclustered format have not been completed.
  Database Issues: There may be underlying database issues or inconsistencies that prevent the unclustered format from being utilized.
  
  Solution:
  
  
  Uncluster BSEG Table: The primary solution is to uncluster the BSEG table. This process typically involves:
  
  Running the transaction code SARA to access the Archive Administration.
  Using the Archive Object for Financial Accounting (FI) to manage the archiving process.
  Following the necessary steps to uncluster the table, which may involve database administration tasks.
  
  
  
  Consult SAP Notes: Check for relevant SAP Notes that provide guidance on unclustered tables and any specific instructions for your version of SAP. You can search for notes related to BSEG and clustering issues in the SAP Support Portal.
  
  
  Database Administration: If you are not familiar with the database administration tasks, it is advisable to involve your database administrator or SAP Basis team to assist with the uncluster process.
  
  
  System Upgrade: If you are running an older version of SAP, consider upgrading to a more recent version where BSEG is already unclustered by default.
  
  
  Contact SAP Support: If the issue persists or if you are unsure about the steps to take, contacting SAP Support for assistance is recommended.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SARA (Archive Administration) and SE11 (Data Dictionary) to check the table structure.
  Backup: Always ensure that you have a backup of your data before performing any operations that modify the database structure.
  Testing: If possible, test the uncluster process in a development or test environment before applying changes to the production system.
  
  By following these steps, you should be able to resolve the FR646 error and ensure that the BSEG table is properly unclustered for your SAP system.