How To Fix SDDL_PARSER_MSG239 - The type of the child entity "&1" is not supported in compositions

SDDL_PARSER_MSG239 - Overview

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 239

• Message text: The type of the child entity "&1" is not supported in compositions

What causes this issue?

The type of the child entity is not supported. A child entity can be one
of the following:
CDS view
Table function
Abstract entity
Custom entity

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

Error message extract from SAP system. Copyright SAP SE.

SDDL_PARSER_MSG239 - Details

• The SAP error message SDDL_PARSER_MSG239 indicates that there is an issue with the type of a child entity in a composition. This error typically arises when you are trying to define a composition in your data model, but the child entity type you are using is not supported for that particular composition.
  
  Cause:
  
  Unsupported Entity Type: The child entity type specified in the composition is not recognized or supported by the SAP system for that specific context.
  Incorrect Configuration: There may be a misconfiguration in the data model or the way the entities are defined.
  Version Compatibility: The version of the SAP system or the specific module you are using may not support the child entity type you are trying to use.
  
  
  Solution:
  
  Check Entity Types: Review the documentation for the specific SAP module you are working with to ensure that the child entity type is supported in compositions. You may need to use a different