How To Fix DDLS_HIER021 - Spantree is not yet supported for hierarchies in CDS

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS_HIER - Used for DDL Hierarchies

• Message number: 021

• Message text: Spantree is not yet supported for hierarchies in CDS

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS_HIER021 - Spantree is not yet supported for hierarchies in CDS ?

  The SAP error message DDLS_HIER021 indicates that the use of a "spanning tree" (spantree) is not supported for hierarchies in Core Data Services (CDS) views. This error typically arises when you are trying to create or use a hierarchy in a CDS view that involves a spanning tree structure, which is not currently supported by the CDS framework.
  
  Cause:
  The primary cause of this error is the attempt to define a hierarchy in a CDS view that utilizes a spanning tree structure. In SAP, hierarchies are often used to represent parent-child relationships, but the CDS framework has certain limitations regarding the types of hierarchies it can handle. Specifically, spanning trees, which allow for multiple paths between nodes, are not supported.
  
  Solution:
  To resolve this error, consider the following approaches:
  
  
  Review Hierarchy Structure: Ensure that the hierarchy you are trying to implement does not require a spanning tree. You may need to redesign your hierarchy to