How To Fix SMT_CONFIG126 - Structure &1 is already specified as a preceeding structure

SAP Error Message - Details

• Message type: E = Error

• Message class: SMT_CONFIG - Configuration message class

• Message number: 126

• Message text: Structure &1 is already specified as a preceeding structure

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 SMT_CONFIG126 - Structure &1 is already specified as a preceeding structure ?

  The SAP error message SMT_CONFIG126 indicates that there is a configuration issue related to the structure definition in the SAP system. Specifically, it means that the structure you are trying to define or configure has already been specified as a preceding structure in the context of the configuration you are working on.
  Cause:
  This error typically occurs in the context of the SAP System Landscape Transformation (SLT) or when configuring data replication settings. The underlying causes can include:
  
  Duplicate Structure Definition: The structure you are trying to add has already been defined as a preceding structure in the configuration.
  Incorrect Configuration: There may be a misconfiguration in the data model or transformation settings where the same structure is being referenced multiple times.
  Data Model Issues: The data model may have inconsistencies or conflicts that lead to this error.
  
  Solution:
  To resolve the SMT_CONFIG126 error, you can follow these steps:
  
  
  Check Configuration: Review the configuration settings where the error occurred. Look for the structure that is causing the issue and verify if it is indeed defined as a preceding structure.
  
  
  Remove Duplicate Entries: If you find that the structure is listed multiple times, remove the duplicate entry from the configuration.
  
  
  Adjust Data Model: If the structure is part of a data model, ensure that the model is correctly defined without circular references or duplicate structures.
  
  
  Consult Documentation: Refer to the SAP documentation or help resources related to the specific module you are working with (e.g., SLT, Data Services) for guidance on proper structure configuration.
  
  
  Testing: After making changes, test the configuration to ensure that the error no longer occurs.
  
  
  Seek Support: If you are unable to resolve the issue, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Transaction Codes: Familiarize yourself with transaction codes related to the configuration you are working on (e.g., LTRC for SLT configuration).
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to identify and resolve the cause of the SMT_CONFIG126 error in your SAP system.