How To Fix REEXFI031 - Document with sender key &1 &2 already exists

REEXFI031 - Overview

• Message type: E = Error

• Message class: REEXFI - Messages for Interface to FI

• Message number: 031

• Message text: Document with sender key &1 &2 already exists

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message REEXFI031 - Document with sender key &1 &2 already exists ?

  The SAP error message REEXFI031 indicates that there is an attempt to create or post a document that already exists in the system with the same sender key. This typically occurs in the context of financial documents, such as invoices or journal entries, where the system checks for duplicate entries based on specific criteria.
  
  Cause:
  The error is triggered when:
  
  A document with the same sender key (which usually includes the company code, document type, and document number) already exists in the system.
  There may be a duplicate posting attempt due to user error, such as reprocessing a document that has already been posted.
  There could be issues with the data being sent from an external system or interface that is trying to create a document that already exists.
  
  
  Solution:
  To resolve the REEXFI031 error, you can take the following steps:
  
  
  Check for Existing Documents:
  
  Use transaction codes like FB03 (Display Document) or FBL1N (Vendor Line Item Display) to