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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG239 - The type of the child entity "&1" is not supported in compositions ?

  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 entity type that is compatible.
  Modify Data Model: If the child entity type is indeed unsupported, consider modifying your data model to use a different entity type that is compatible with the composition.
  Consult SAP Notes: Look for any relevant SAP Notes or updates that might address this issue. Sometimes, there are patches or updates that can resolve compatibility issues.
  Review Configuration: Ensure that your configuration settings for the data model are correct and that all necessary components are properly defined.
  Seek Help from SAP Support: If you are unable to resolve the issue, consider reaching out to SAP Support for assistance. They can provide guidance based on the specific details of your implementation.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for the specific module you are working with to understand the supported entity types and compositions.
  Community Forums: Check SAP community forums or discussion boards where other users may have encountered similar issues and shared their solutions.
  Training Resources: If you are new to SAP data modeling, consider taking training courses or workshops that cover the basics of entity relationships and compositions in SAP.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.