How To Fix /SCMTMS/TOR_OH021 - Hierarchy type must not be self-referential

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMTMS/TOR_OH -

• Message number: 021

• Message text: Hierarchy type must not be self-referential

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCMTMS/TOR_OH021 - Hierarchy type must not be self-referential ?

  The SAP error message /SCMTMS/TOR_OH021 indicates that there is an issue with the hierarchy type configuration in the Transportation Management System (TMS). Specifically, it states that the hierarchy type must not be self-referential, meaning that a hierarchy cannot reference itself directly or indirectly.
  Cause:
  This error typically occurs when:
  
  A hierarchy type is defined in such a way that it points back to itself, creating a circular reference.
  The configuration of the hierarchy types in the TMS is incorrect, leading to self-referential relationships.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Hierarchy Configuration:
  
  Go to the TMS configuration settings in your SAP system.
  Navigate to the hierarchy type definitions and review the relationships defined for each hierarchy type.
  Ensure that no hierarchy type is set to reference itself directly or indirectly.
  
  
  
  Modify Hierarchy Types:
  
  If you find a self-referential hierarchy, modify the configuration to remove the self-reference.
  Ensure that each hierarchy type has a clear parent-child relationship without looping back to itself.
  
  
  
  Test Changes:
  
  After making the necessary changes, test the configuration to ensure that the error no longer occurs.
  You can do this by trying to execute the process that previously triggered the error.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for guidance on configuring hierarchy types correctly.
  If needed, consult with your SAP Basis or TMS consultant for assistance.
  
  
  
  Transport Changes:
  
  If you are working in a development environment, ensure that any changes made are transported to the production environment after thorough testing.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might provide additional insights or patches related to this error.
  Transaction Codes: Familiarize yourself with transaction codes related to TMS configuration, such as /SCMTMS/CONFIG for configuration settings.
  Community Forums: Engage with SAP community forums or support channels for shared experiences and solutions from other users who may have encountered the same issue.
  
  By following these steps, you should be able to resolve the /SCMTMS/TOR_OH021 error and ensure that your hierarchy types are configured correctly in SAP TMS.