How To Fix /SMB/DEFINITION013 - &1 is a key field. Key fields are mandatory and cannot be opted-out

SAP Error Message - Details

• Message type: E = Error

• Message class: /SMB/DEFINITION -

• Message number: 013

• Message text: &1 is a key field. Key fields are mandatory and cannot be opted-out

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SMB/DEFINITION013 - &1 is a key field. Key fields are mandatory and cannot be opted-out ?

  The SAP error message /SMB/DEFINITION013 &1 is a key field. Key fields are mandatory and cannot be opted-out typically occurs in the context of SAP Business One or SAP S/4HANA when dealing with data definitions, particularly when trying to modify or create a data structure that includes key fields.
  
  Cause:
  
  Key Field Definition: The error indicates that you are trying to perform an operation (like creating or modifying a data structure) where a key field is involved. Key fields are essential for uniquely identifying records in a database table.
  Attempt to Exclude Key Field: The error arises when there is an attempt to exclude or opt-out a key field from a process that requires it to be included. Key fields are mandatory and cannot be omitted in certain operations.
  
  
  Solution:
  
  Review Data Structure: Check the data structure you are working with. Ensure that you are not trying to exclude any key fields that are required