How To Fix SADL_GEN_DRFT_MSG020 - Composition tree could not be set.

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GEN_DRFT_MSG - Message for Draft generation

• Message number: 020

• Message text: Composition tree could not be set.

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GEN_DRFT_MSG020 - Composition tree could not be set. ?

  The SAP error message SADL_GEN_DRFT_MSG020 indicates that there is an issue with setting the composition tree in the SAP Application Development Framework (SADL). This error typically arises when there are problems with the data model or the configuration of the service that is being used.
  Causes:
  
  Incorrect Configuration: The composition tree may not be properly configured in the service definition.
  Data Model Issues: There may be inconsistencies or errors in the underlying data model that prevent the composition tree from being set.
  Missing Annotations: Required annotations for the OData service may be missing, which can lead to issues in generating the composition tree.
  Service Implementation Errors: There could be errors in the implementation of the service that are causing the composition tree to fail.
  Authorization Issues: Lack of proper authorizations for accessing certain data or services can also lead to this error.
  
  Solutions:
  
  Check Configuration: Review the configuration of the service and ensure that the composition tree is correctly defined. Make sure that all necessary associations and relationships are properly set up.
  Validate Data Model: Check the underlying data model for any inconsistencies or errors. Ensure that all entities and relationships are correctly defined.
  Add Missing Annotations: If there are missing annotations in the OData service, add them as required. This may involve updating the service definition or the underlying data model.
  Debug the Service Implementation: If you have access to the service implementation, debug the code to identify any potential issues that may be causing the error.
  Check Authorizations: Ensure that the user has the necessary authorizations to access the data and services involved in the composition tree.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Documentation: Review the official SAP documentation for SADL and OData services to ensure that you are following best practices in your implementation.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.