How To Fix COM_DML_ENGINE034 - Hierarchy must be cycle-free

COM_DML_ENGINE034 - Overview

• Message type: E = Error

• Message class: COM_DML_ENGINE - MDF Processing Layer

• Message number: 034

• Message text: Hierarchy must be cycle-free

What causes this issue?

In a hierarchy, an object may not be assigned to itself. This also
applies to indirect assignments across intermediate levels.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message COM_DML_ENGINE034 - Hierarchy must be cycle-free ?

  The SAP error message COM_DML_ENGINE034: Hierarchy must be cycle-free typically occurs in the context of working with hierarchical data structures in SAP, such as when dealing with master data, organizational structures, or other hierarchical relationships. This error indicates that there is a cycle or loop in the hierarchy, which violates the requirement for a tree structure where each node (or element) must have a single parent and cannot point back to itself or create a loop.
  
  Cause:
  
  Cyclic Relationships: The most common cause of this error is the presence of cyclic relationships in the hierarchy. For example, if node A points to node B as its parent, and node B points back to node A, this creates a cycle.
  Incorrect Data Entry: During the creation or modification of hierarchical data, incorrect entries may lead to cycles being formed.
  Data Migration Issues: If data has been migrated from another system, it may not adhere to