How To Fix FINS_RECON511 - &1: Duplicate key in ACDOCA

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 511

• Message text: &1: Duplicate key in ACDOCA

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FINS_RECON511 - &1: Duplicate key in ACDOCA ?

  The SAP error message FINS_RECON511 indicates that there is a duplicate key in the ACDOCA table, which is the Universal Journal in SAP S/4HANA. This error typically occurs during the posting of financial documents when the system detects that a record with the same key already exists in the ACDOCA table.
  Cause:
  The primary causes of this error can include:
  
  Duplicate Document Posting: Attempting to post a financial document that has already been posted, leading to a conflict in the unique key constraints of the ACDOCA table.
  Incorrect Configuration: Issues with the configuration of the financial document types or posting rules that may allow for duplicate entries.
  Data Migration Issues: If data has been migrated from another system, there may be duplicates that were not properly handled during the migration process.
  Concurrency Issues: Multiple users or processes trying to post the same document simultaneously.
  
  Solution:
  To resolve the FINS_RECON511 error, you can take the following steps:
  
  
  Check for Existing Entries: 
  
  Use transaction code SE16N or SE11 to view the ACDOCA table and check for existing entries that match the key of the document you are trying to post. The key typically consists of fields like Company Code, Ledger, Fiscal Year, Period, Document Number, etc.
  
  
  
  Identify the Duplicate: 
  
  If you find a duplicate entry, determine whether it is a legitimate duplicate or if it was created in error. If it is an error, you may need to reverse or delete the duplicate entry.
  
  
  
  Review Document Posting Logic: 
  
  Ensure that the logic for posting documents is correct and that there are no issues in the configuration that could lead to duplicate postings.
  
  
  
  Check for Batch Jobs: 
  
  If batch jobs are involved in posting documents, ensure that they are not running concurrently and causing duplicate entries.
  
  
  
  Data Migration Review: 
  
  If the issue arose after a data migration, review the migration process to ensure that it correctly handled unique keys and did not introduce duplicates.
  
  
  
  Consult SAP Notes: 
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  
  Contact SAP Support: 
  
  If the issue persists and you cannot identify the cause, consider reaching out to SAP Support for assistance.
  
  
  
  Related Information:
  
  ACDOCA Table: This table is part of the Universal Journal in SAP S/4HANA and contains all the line items for financial accounting, controlling, and other modules.
  Document Keys: The unique key for entries in ACDOCA typically includes fields such as Company Code, Ledger, Fiscal Year, Period, and Document Number.
  Transaction Codes: Familiarize yourself with transaction codes like SE16N (Data Browser), SE11 (Data Dictionary), and FB03 (Display Document) for troubleshooting.
  
  By following these steps, you should be able to identify and resolve the cause of the FINS_RECON511 error in SAP.