How To Fix JIT00671 - An entry already exists for material number &1 and plant &2

JIT00671 - Overview

• Message type: E = Error

• Message class: JIT00 - JIT: Messages for JIT Process

• Message number: 671

• Message text: An entry already exists for material number &1 and plant &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.

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 JIT00671 - An entry already exists for material number &1 and plant &2 ?

  The SAP error message JIT00671 indicates that there is an attempt to create or update a record for a material in a specific plant, but an entry for that combination already exists in the system. This typically occurs in the context of Just-In-Time (JIT) processing, where materials are managed closely between suppliers and production.
  
  Cause:
  
  Duplicate Entry: The most common cause is that there is already an existing record for the specified material number and plant combination in the JIT database.
  Data Entry Error: There may have been an error in data entry, leading to an attempt to create a duplicate record.
  Integration Issues: If data is being imported or integrated from another system, it may lead to duplicates if the checks for existing records are not properly implemented.
  
  
  Solution:
  
  
  Check Existing Records: 
  
  Use transaction codes like MM03 (Display Material) or JIT1 (JIT Data) to check if the material number and plant combination already exists.
  If it