How To Fix SD_CDS_PROJECTION013 - Definition of new Associations is not supported in Projection Views yet

SAP Error Message - Details

• Message type: E = Error

• Message class: SD_CDS_PROJECTION - Message for Projection Entities

• Message number: 013

• Message text: Definition of new Associations is not supported in Projection Views yet

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SD_CDS_PROJECTION013 - Definition of new Associations is not supported in Projection Views yet ?

  The error message SD_CDS_PROJECTION013 in SAP indicates that there is an attempt to define new associations in a projection view, which is not supported. This typically occurs when working with Core Data Services (CDS) views in the SAP S/4HANA environment, particularly when trying to create or modify projection views.
  Cause:
  The primary cause of this error is that projection views in CDS are designed to be lightweight and are intended to project a subset of fields from a data source without introducing new associations. In other words, projection views can only reference existing associations from the underlying data sources but cannot create new ones.
  Solution:
  To resolve this error, consider the following approaches:
  
  
  Use a Different Type of CDS View: If you need to create new associations, consider using a different type of CDS view, such as a join view or a composite view. These types of views allow for more complex data modeling, including the definition of new associations.
  
  
  Modify the Existing Projection View: If you are working with an existing projection view, review the definition to ensure that you are not trying to add new associations. Instead, use the existing associations defined in the underlying data sources.
  
  
  Check the Data Model: Ensure that the data model you are working with is designed correctly. If you need to create new relationships between entities, it may be necessary to adjust the underlying data model or create a new view that meets your requirements.
  
  
  Review Documentation: Consult the SAP documentation for Core Data Services to understand the limitations and capabilities of projection views. This can provide insights into how to structure your views appropriately.
  
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) are a framework for defining semantically rich data models in SAP. They allow for the creation of views that can be consumed by various applications and tools.
  Projection Views: These are a specific type of CDS view that allows you to select a subset of fields from a data source without altering the underlying data structure.
  Associations: In CDS, associations define relationships between different entities. They can be used to navigate between related data in a structured way.
  
  If you continue to encounter issues or need further assistance, consider reaching out to your SAP support team or consulting the SAP Community for additional guidance.