How To Fix RTCMMD188 - Node & cannot refer to itself

RTCMMD188 - Overview

• Message type: E = Error

• Message class: RTCMMD - Article Hierarchy

• Message number: 188

• Message text: Node & cannot refer to itself

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 RTCMMD188 - Node & cannot refer to itself ?

  The SAP error message RTCMMD188, which states "Node & cannot refer to itself," typically occurs in the context of defining hierarchical structures, such as in the configuration of master data or in the creation of certain types of relationships within the SAP system. This error indicates that a node (which could be a material, customer, vendor, etc.) is attempting to reference itself in a way that is not allowed.
  
  Cause:
  The primary cause of this error is that the system has detected a circular reference where a node is trying to point to itself. This can happen in various scenarios, such as:
  
  Hierarchical Structures: When defining a hierarchy (e.g., in a bill of materials or a classification), a node should not be its own parent.
  Master Data Relationships: When setting up relationships between different master data records, a record should not reference itself.
  
  
  Solution:
  To resolve the RTCMMD188 error, you can take the following steps:
  
  
  Review the