How To Fix FINS_RECON521 - &1: Entry in BSEG without corresponding entry in ACDOCA

FINS_RECON521 - Overview

• Message type: E = Error

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

• Message number: 521

• Message text: &1: Entry in BSEG without corresponding entry in ACDOCA

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FINS_RECON521 - &1: Entry in BSEG without corresponding entry in ACDOCA ?

  The SAP error message FINS_RECON521 indicates that there is an inconsistency between the line items in the BSEG table (which stores accounting document line items) and the ACDOCA table (which is part of the Universal Journal in SAP S/4HANA). Specifically, this error occurs when there is an entry in BSEG that does not have a corresponding entry in ACDOCA.
  
  Cause:
  
  Data Migration Issues: This error often arises during data migration from an older version of SAP (like SAP ECC) to SAP S/4HANA, where the data structures have changed.
  Manual Changes: If manual changes were made to the accounting documents or if there were issues during document posting, it could lead to inconsistencies.
  Custom Development: Custom programs or enhancements that manipulate accounting documents may inadvertently create inconsistencies.
  System Errors: Bugs or errors in the system during document processing can also lead to this issue.
  
  
  Solution:
  
  Check for Missing Entries: Use transaction codes like SE16 or SE11 to check