How To Fix /NFM/MM210 - Transaction &: NF key & already exists

/NFM/MM210 - Overview

• Message type: E = Error

• Message class: /NFM/MM -

• Message number: 210

• Message text: Transaction &: NF key & 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 /NFM/MM210 - Transaction &: NF key & already exists ?

  The SAP error message /NFM/MM210 Transaction &: NF key & already exists typically occurs in the context of the SAP Materials Management (MM) module, particularly when dealing with the creation or modification of a material master record or a related transaction. This error indicates that the key you are trying to create already exists in the system, which prevents the transaction from being completed.
  
  Cause:
  
  Duplicate Entry: The most common cause of this error is that you are attempting to create a new record (such as a material master or a purchasing info record) with a key (like a material number or vendor number) that already exists in the database.
  Incorrect Data Entry: There may be a typographical error in the key you are trying to enter, leading to a conflict with an existing record.
  System Configuration: In some cases, the system configuration or settings may allow for certain keys to be unique, and