How To Fix SDDL_PARSER_MSG229 - $$projection is not supported in hierarchies

SDDL_PARSER_MSG229 - Overview

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 229

• Message text: $$projection is not supported in hierarchies

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG229 - $$projection is not supported in hierarchies ?

  The SAP error message SDDL_PARSER_MSG229 with the description $$projection is not supported in hierarchies typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when working with hierarchies in queries or data models. This error indicates that the use of a projection (a specific type of data transformation or filtering) is not compatible with the hierarchical structure of the data being processed.
  
  Cause:
  
  Hierarchical Data Structure: The error arises when a projection operation is attempted on a data structure that is defined as a hierarchy. Hierarchies in SAP are used to represent parent-child relationships, and certain operations, like projections, may not be valid in this context.
  Query Design: If you are designing a query that involves hierarchies and you inadvertently include a projection operation, the system will throw this error.
  Incompatible Data Model: The data model or the InfoObject being used may not support projections when it is defined as a