How To Fix FG821 - Choose a unique identifier

FG821 - Overview

• Message type: E = Error

• Message class: FG - Program Error Messages

• Message number: 821

• Message text: Choose a unique identifier

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 FG821 - Choose a unique identifier ?

  The SAP error message FG821, which states "Choose a unique identifier," typically occurs in the context of creating or processing documents in SAP, such as during the creation of a production order, purchase order, or other transactional processes where unique identifiers (like document numbers or item numbers) are required.
  
  Cause:
  
  
  Duplicate Entry: The most common cause of this error is that the system has detected a duplicate entry for a field that requires a unique identifier. This could be due to:
  
  Attempting to create a new record with an identifier that already exists in the database.
  A configuration issue where the system is not correctly generating unique identifiers.
  
  
  
  
  Configuration Issues: In some cases, the configuration settings for number ranges or document types may not be set up correctly, leading to conflicts.
  
  
  User Input Error: The user may have inadvertently entered a value that is not unique, such as a duplicate item number or document number.
  
  
  
  Solution:
  
  
  Check for