How To Fix SDDL_PARSER_MSG399 - Target entity "&1" must be a projection view

SAP Error Message - Details

• Message type: E = Error

• Message class: SDDL_PARSER_MSG - Message Class for DDL Parser

• Message number: 399

• Message text: Target entity "&1" must be a projection view

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message SDDL_PARSER_MSG399 - Target entity "&1" must be a projection view ?

  The SAP error message SDDL_PARSER_MSG399 indicates that the target entity specified in your operation must be a projection view, but it is not. This error typically arises in the context of SAP's Core Data Services (CDS) views or when working with the SAP Business Application Studio or SAP HANA.
  Cause:
  The error occurs when:
  
  You are trying to use a non-projection view (like a standard CDS view or a table) as a target entity in a data manipulation operation (like an insert, update, or delete).
  The target entity is expected to be a projection view, which is a specific type of view that only includes a subset of fields from the underlying data model.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Target Entity: Ensure that the target entity you are trying to use is indeed a projection view. You can do this by checking the definition of the view in the ABAP Development Tools or SAP HANA Studio.
  
  
  Create a Projection View: If the target entity is not a projection view, you may need to create one. A projection view can be created by defining a new CDS view that selects only the necessary fields from the original view or table.
  Example of a simple projection view:
  @AbapCatalog.sqlViewName: 'Z_MY_PROJECTION_VIEW'
  @AbapCatalog.compiler.compareFilter: true
  @AccessControl.authorizationCheck: #CHECK
  define view Z_My_Projection_View as select from Z_My_Original_View
  {
      key field1,
      field2,
      field3
  }
  
  
  Modify Your Code: If you are using a framework or a tool that requires a projection view, ensure that you are referencing the correct view in your code.
  
  
  Consult Documentation: If you are unsure about the requirements for projection views, refer to the SAP documentation on CDS views and projection views for more detailed information.
  
  
  Related Information:
  
  Core Data Services (CDS): A framework for defining semantically rich data models in SAP.
  Projection Views: These are views that allow you to select specific fields from a data source, which can be useful for performance optimization and data abstraction.
  SAP HANA Studio: A development environment for working with SAP HANA databases, where you can create and manage CDS views.
  
  If you continue to face issues after following these steps, consider reaching out to your SAP support team or consulting the SAP Community for further assistance.