How To Fix RSRTS_CDS203 - &1 (at &2): local associations not allowed (when @Analytics.query: true)

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRTS_CDS - Messages Transient CDS Queries

• Message number: 203

• Message text: &1 (at &2): local associations not allowed (when @Analytics.query: true)

Self-Explanatory Message

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• What is the cause and solution for SAP error message RSRTS_CDS203 - &1 (at &2): local associations not allowed (when @Analytics.query: true) ?

  The SAP error message RSRTS_CDS203 indicates that there is an issue with the use of local associations in a Core Data Services (CDS) view when the annotation @Analytics.query: true is applied. This error typically arises when you are trying to create a CDS view that is intended for analytical purposes but includes local associations, which are not permitted in this context.
  Cause:
  The error occurs because:
  
  Local associations (associations defined within the same CDS view) are not allowed in CDS views that are marked for analytical queries using the @Analytics.query: true annotation.
  The analytical query framework in SAP expects to work with associations that are defined at a higher level (e.g., in the underlying data model) to ensure performance and consistency.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Remove Local Associations: 
  
  Review your CDS view definition and identify any local associations. Remove these associations and replace them with joins or use associations defined in other CDS views or data sources.
  
  
  
  Use Global Associations:
  
  If you need to relate data from different entities, consider using global associations that are defined in other CDS views. This way, you can maintain the analytical capabilities of your CDS view.
  
  
  
  Refactor the CDS View:
  
  If the logic of your CDS view heavily relies on local associations, you may need to refactor the view. This could involve creating separate CDS views for different parts of your data model and then combining them using global associations.
  
  
  
  Check Documentation:
  
  Refer to the SAP documentation for CDS views and analytical queries to understand the best practices and guidelines for defining associations.
  
  
  
  Testing:
  
  After making the necessary changes, test the CDS view to ensure that it works as expected and that the error is resolved.
  
  
  
  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 SAP applications.
  Analytical Queries: These are special types of CDS views that are optimized for reporting and analytics. They leverage the capabilities of the SAP HANA database for performance.
  Associations vs. Joins: Understand the difference between associations (which are more flexible and can be used to define relationships between entities) and joins (which are more rigid and are used to combine data from different tables).
  
  By following these steps and understanding the underlying principles, you should be able to resolve the RSRTS_CDS203 error and successfully create your analytical CDS view.