How To Fix /SMB/SC_MAIN126 - Custom selection &1'-'&2 cannot be assigned to standard solution &3

SAP Error Message - Details

• Message type: E = Error

• Message class: /SMB/SC_MAIN -

• Message number: 126

• Message text: Custom selection &1'-'&2 cannot be assigned to standard solution &3

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SMB/SC_MAIN126 - Custom selection &1'-'&2 cannot be assigned to standard solution &3 ?

  The SAP error message /SMB/SC_MAIN126 typically indicates an issue related to the assignment of a custom selection to a standard solution in the SAP system. This error often arises in the context of SAP Business ByDesign or SAP S/4HANA, particularly when dealing with solution management or project management functionalities.
  Cause:
  The error message /SMB/SC_MAIN126 is triggered when:
  
  A custom selection (which could be a custom field, configuration, or selection criteria) is not compatible with the standard solution you are trying to assign it to.
  There may be a mismatch in the data types, structures, or configurations between the custom selection and the standard solution.
  The custom selection might not be properly defined or might not exist in the system.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Custom Selection Definition:
  
  Verify that the custom selection you are trying to assign is correctly defined in the system. Ensure that all necessary fields and configurations are in place.
  
  
  
  Compatibility Check:
  
  Ensure that the custom selection is compatible with the standard solution. Check the data types and structures to confirm they match the requirements of the standard solution.
  
  
  
  Review Assignment Logic:
  
  Look into the logic or configuration that is attempting to assign the custom selection to the standard solution. Make sure that the assignment is valid and follows the expected guidelines.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources related to the specific module you are working with. This can provide insights into the expected configurations and common pitfalls.
  
  
  
  SAP Notes and Support:
  
  Check for any relevant SAP Notes that might address this specific error. SAP Notes often contain fixes or workarounds for known issues.
  If the issue persists, consider reaching out to SAP Support for assistance, providing them with the error message and context.
  
  
  
  Testing:
  
  After making any changes, conduct thorough testing to ensure that the custom selection can now be assigned to the standard solution without triggering the error.
  
  
  
  Related Information:
  
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues. You can find discussions, solutions, and best practices.
  SAP Help Portal: Utilize the SAP Help Portal for detailed documentation on the specific modules and functionalities you are working with.
  Training and Resources: Consider SAP training resources or courses that cover solution management and customizations to better understand the underlying principles.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.