How To Fix SDDL_PARSER_MSG247 - Key field "&1" already used in ON condition of the composition definition

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 247

• Message text: Key field "&1" already used in ON condition of the composition definition

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 SDDL_PARSER_MSG247 - Key field "&1" already used in ON condition of the composition definition ?

  The SAP error message SDDL_PARSER_MSG247 indicates that there is a problem with the definition of a composition in the SAP system, specifically related to the use of key fields in the ON condition of the composition definition. The message states that a key field (represented by "&1") is already being used in the ON condition, which is not allowed.
  
  Cause:
  The error typically arises when:
  
  A key field is defined multiple times in the ON condition of a composition definition.
  The composition definition is incorrectly set up, leading to ambiguity in how the key fields are being utilized.
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Review the Composition Definition:
  
  Go to the relevant transaction or area where the composition definition is maintained (e.g., using transaction codes like SE11 for Data Dictionary or SE80 for Object Navigator).
  Locate the composition definition that is causing the error.
  
  
  
  Check the ON Condition:
  
  Examine the ON condition of the composition definition. Ensure