How To Fix SD_CDS_ENTITY063 - In child entity "&1" of "&2" the "association to parent" is missing.

SAP Error Message - Details

• Message type: E = Error

• Message class: SD_CDS_ENTITY - Messages for STOBS/entities

• Message number: 063

• Message text: In child entity "&1" of "&2" the "association to parent" is missing.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SD_CDS_ENTITY063 - In child entity "&1" of "&2" the "association to parent" is missing. ?

  The SAP error message SD_CDS_ENTITY063 indicates that there is a missing association to a parent entity in a child entity within the context of Core Data Services (CDS) views. This typically occurs when the data model defined in the CDS view does not properly establish the relationship between the parent and child entities.
  Cause:
  
  Missing Association Definition: The child entity is expected to have an association defined to its parent entity, but this association is either missing or incorrectly defined.
  Incorrect CDS View Definition: The CDS view might not be correctly set up to reflect the relationships between entities, leading to the absence of the required association.
  Modeling Errors: There may be errors in the way the data model is designed, such as incorrect annotations or missing fields that are supposed to link the entities.
  
  Solution:
  
  
  Check CDS View Definition:
  
  Review the CDS view definition for the child entity and ensure that the association to the parent entity is correctly defined.
  Ensure that the association is properly annotated and that the fields used for the association exist in both the parent and child entities.
  
  
  
  Define the Association:
  
  If the association is missing, you need to define it in the CDS view. For example:
  define view ZChildEntity as select from ZParentEntity
  association [0..*] to ZParentEntity as _Parent
  on _Parent.KeyField = ZChildEntity.ParentKeyField
  
  Make sure to replace KeyField and ParentKeyField with the actual field names used in your data model.
  
  
  
  Validate the Data Model:
  
  Ensure that the data model accurately reflects the business requirements and that all necessary relationships are established.
  Use transaction codes like SE11 or SE80 to check the data dictionary and ensure that the entities are correctly defined.
  
  
  
  Activate the CDS View:
  
  After making changes, activate the CDS view to ensure that the changes take effect.
  
  
  
  Test the Changes:
  
  After activation, test the CDS view to ensure that the error no longer occurs and that the data is being retrieved as expected.
  
  
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) is a framework for defining semantically rich data models in SAP. Understanding how to create and manage CDS views is crucial for resolving issues like this.
  SAP Documentation: Refer to the official SAP documentation for detailed guidelines on defining associations in CDS views.
  SAP Community: Engage with the SAP Community forums for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the error message SD_CDS_ENTITY063 and ensure that your CDS views are correctly defined and functional.