How To Fix SD_CDS_PROJECTION010 - Expression 'is null' is not supported in Projection View Where-Condition

SAP Error Message - Details

• Message type: E = Error

• Message class: SD_CDS_PROJECTION - Message for Projection Entities

• Message number: 010

• Message text: Expression 'is null' is not supported in Projection View Where-Condition

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 SD_CDS_PROJECTION010 - Expression 'is null' is not supported in Projection View Where-Condition ?

  The SAP error message SD_CDS_PROJECTION010 indicates that there is an issue with the use of the expression is null in a Projection View Where-Condition within a Core Data Services (CDS) view. This error typically arises when you are trying to filter data in a way that is not supported by the CDS projection view.
  Cause:
  The primary cause of this error is the use of the is null condition in the WHERE clause of a CDS projection view. In CDS views, certain SQL expressions and conditions are not supported, and is null is one of them. This restriction is in place because projection views are designed to provide a simplified view of the data, and certain operations may not be compatible with the underlying data model.
  Solution:
  To resolve this error, you can consider the following approaches:
  
  
  Use Alternative Conditions: Instead of using is null, you can check for empty or default values that are equivalent to null in your context. For example, if you are checking for a string field, you might use:
  WHERE field_name = ''
  or for numeric fields:
  WHERE field_name = 0
  
  
  Refactor the Logic: If the logic of your application allows, you might need to refactor the way you handle null values. This could involve changing how data is processed before it reaches the projection view.
  
  
  Use a Different Type of View: If the requirement to check for null values is critical, consider using a different type of view (like a basic view or a join view) that allows for more complex SQL expressions, including is null.
  
  
  Check for Data Model Changes: Ensure that the underlying data model supports the logic you are trying to implement. Sometimes, changes in the data model can lead to unexpected behavior in CDS views.
  
  
  Consult Documentation: Review the SAP documentation for Core Data Services to understand the limitations and best practices for creating projection views.
  
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) are a way to define semantically rich data models in SAP. They allow for the definition of views that can be consumed by various applications.
  Projection Views: These are a specific type of CDS view that allows you to project a subset of fields from a data source. They are optimized for performance but come with certain limitations.
  SAP Notes and Community: Check SAP Notes or the SAP Community for any updates or discussions related to this error, as there may be specific patches or workarounds available.
  
  By following these steps, you should be able to resolve the SD_CDS_PROJECTION010 error and implement the desired functionality in your CDS view.