How To Fix /BOBF/CONF_CDS093 - [BO check] Cycle detected! Child &2 already part of composition (view &1)

SAP Error Message - Details

• Message type: E = Error

• Message class: /BOBF/CONF_CDS -

• Message number: 093

• Message text: [BO check] Cycle detected! Child &2 already part of composition (view &1)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /BOBF/CONF_CDS093 - [BO check] Cycle detected! Child &2 already part of composition (view &1) ?

  The SAP error message /BOBF/CONF_CDS093 [BO check] Cycle detected! Child &2 already part of composition (view &1) typically occurs in the context of Business Object Framework (BOF) and Core Data Services (CDS) views in SAP. This error indicates that there is a cyclic reference in the data model, where a child entity is trying to reference a parent entity that is already part of its composition. 
  Cause:
  
  Cyclic Reference: The most common cause of this error is a cyclic reference in the data model. This means that the child entity is trying to reference a parent entity that is already included in its own hierarchy, leading to a loop.
  Incorrect Associations: There may be incorrect associations or relationships defined in the CDS view or the Business Object that create a cycle.
  Data Model Design: The design of the data model may inherently lead to cycles due to the way entities are related to each other.
  
  Solution:
  
  Review Data Model: Examine the data model to identify any cyclic references. Look for relationships where a child entity references a parent entity that is also referencing the child.
  Adjust Associations: Modify the associations in the CDS view or Business Object definition to eliminate the cycle. Ensure that the relationships are defined correctly and do not create loops.
  Use Composition Carefully: When defining compositions, ensure that the child entities do not reference back to the parent in a way that creates a cycle.
  Testing: After making changes, test the data model to ensure that the error no longer occurs and that the data is being retrieved as expected.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for Business Object Framework and Core Data Services for best practices on defining associations and compositions.
  Debugging Tools: Use debugging tools available in SAP to trace the execution and identify where the cycle is being created.
  Community Forums: Check SAP Community forums or other developer forums for similar issues and solutions shared by other users.
  
  By carefully reviewing and adjusting the data model and associations, you should be able to resolve the error and prevent cyclic references in your SAP application.