How To Fix COM_DML_CUST091 - Hierarchy relationship type cannot refer to other object types

COM_DML_CUST091 - Overview

• Message type: E = Error

• Message class: COM_DML_CUST - MDF Messages

• Message number: 091

• Message text: Hierarchy relationship type cannot refer to other object types

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 COM_DML_CUST091 - Hierarchy relationship type cannot refer to other object types ?

  The SAP error message COM_DML_CUST091 indicates that there is an issue with the hierarchy relationship type in the context of the SAP system, specifically within the context of the SAP Customer Relationship Management (CRM) or SAP Advanced Planning and Optimization (APO) modules. This error typically arises when a hierarchy relationship is incorrectly defined, referring to an object type that is not allowed.
  
  Cause:
  The error occurs when:
  
  A hierarchy relationship type is trying to reference an object type that is not compatible or not allowed within the defined hierarchy.
  The configuration of the hierarchy relationship is incorrect, possibly due to a misconfiguration in the customizing settings or an attempt to create a relationship that violates the defined rules of the hierarchy.
  
  
  Solution:
  To resolve the COM_DML_CUST091 error, you can follow these steps:
  
  
  Check Hierarchy Configuration:
  
  Go to the customizing settings in SAP (transaction code SPRO).
  Navigate to the relevant area where hierarchy relationships are defined (e.g., under CRM or