How To Fix SADL_GW_DT_CDS022 - CDS view &1: Association to child &2 must use primary key of CDS view &1.

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GW_DT_CDS - Messages CDS Checks

• Message number: 022

• Message text: CDS view &1: Association to child &2 must use primary key of CDS view &1.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GW_DT_CDS022 - CDS view &1: Association to child &2 must use primary key of CDS view &1. ?

  The SAP error message SADL_GW_DT_CDS022 indicates that there is an issue with the association defined in a Core Data Services (CDS) view. Specifically, it states that the association to a child entity must use the primary key of the parent CDS view. This error typically arises when the association is not correctly defined according to the rules of CDS views in SAP.
  Cause:
  The error occurs when:
  
  The association between the parent CDS view and the child CDS view does not use the primary key of the parent view.
  The fields used in the association do not match the primary key fields of the parent CDS view.
  There may be a mismatch in the data types or cardinality of the fields being associated.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check the Association Definition:
  
  Open the CDS view where the error is occurring.
  Review the association definition to ensure that it is correctly referencing the primary key of the parent CDS view.
  
  
  
  Use Primary Key Fields:
  
  Ensure that the fields used in the association from the child CDS view are indeed the primary key fields of the parent CDS view.
  If necessary, modify the association to use the correct primary key fields.
  
  
  
  Data Type and Cardinality:
  
  Verify that the data types of the fields being associated are compatible.
  Check the cardinality of the association to ensure it aligns with the expected relationship (e.g., one-to-one, one-to-many).
  
  
  
  Activate the CDS View:
  
  After making the necessary changes, activate the CDS view to ensure that the changes take effect.
  
  
  
  Test the Association:
  
  Once activated, test the CDS view to confirm that the error has been resolved and that the association works as intended.
  
  
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) is a framework for defining semantically rich data models in SAP. It allows for the creation of views that can be consumed by various applications.
  Associations: In CDS views, associations are used to define relationships between different entities. They are similar to foreign key relationships in traditional database design.
  Primary Key: The primary key is a unique identifier for records in a database table. In CDS views, it is essential to use primary keys correctly to maintain data integrity and ensure proper associations.
  
  If you continue to experience issues after following these steps, consider consulting the SAP documentation or reaching out to SAP support for further assistance.