How To Fix COM_DIFF_KEY012 - Field name & exists more than once in the internal key fields

COM_DIFF_KEY012 - Overview

• Message type: E = Error

• Message class: COM_DIFF_KEY - Messages for Differentiation Key

• Message number: 012

• Message text: Field name & exists more than once in the internal key fields

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 COM_DIFF_KEY012 - Field name & exists more than once in the internal key fields ?

  The SAP error message COM_DIFF_KEY012 indicates that there is a duplicate field name in the internal key fields of a data structure or table. This typically occurs when you are trying to create or modify a data structure, such as a table or a view, and the system detects that the same field name has been defined more than once.
  
  Cause:
  
  Duplicate Field Definitions: The most common cause is that the same field has been defined multiple times in the key fields of a table or structure.
  Incorrect Data Model: If you are working with a data model that has been incorrectly designed or modified, it may lead to this error.
  Copying Structures: If you have copied a structure or table definition and did not change the field names appropriately, this can lead to duplicates.
  
  
  Solution:
  
  Check Field Definitions: Review the key fields of the data structure or table where the error is occurring. Ensure that