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

/SCMTMS/TOR_OH021 - Overview

• Message type: E = Error

• Message class: /SCMTMS/TOR_OH -

• Message number: 021

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

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

/SCMTMS/TOR_OH021 - Details

• 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