How To Fix BK834 - System error: reference to line in preceding document not unique. &1/&2

BK834 - Overview

• Message type: E = Error

• Message class: BK - Create, Display, Reverse Controlling Document

• Message number: 834

• Message text: System error: reference to line in preceding document not unique. &1/&2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message BK834 - System error: reference to line in preceding document not unique. &1/&2 ?

  The SAP error message BK834, which states "System error: reference to line in preceding document not unique," typically occurs in the context of financial document processing, particularly when dealing with document references in accounting entries. This error indicates that there is an issue with the way line items are being referenced in a document, leading to ambiguity or duplication.
  
  Cause:
  
  
  Duplicate References: The error often arises when there are multiple line items in a preceding document that reference the same line item in a way that is not unique. This can happen if the same line item is being referenced multiple times in a subsequent document.
  
  
  Incorrect Document Flow: If the document flow is not correctly maintained, it can lead to inconsistencies in how line items are referenced.
  
  
  Data Integrity Issues: There may be underlying data integrity issues in the database, such as missing or corrupted entries.
  
  
  
  Configuration Issues: Incorrect configuration settings in the SAP