How To Fix DHCDC_CORE023 - Structure of CDS view &1 has changed; see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: DHCDC_CORE -

• Message number: 023

• Message text: Structure of CDS view &1 has changed; see long text

What causes this issue?

The structure of this CDS view has changed. A table &V2& has either been
added to this CDS view or has been replaced or removed. If a CDS view is
adjusted in this way, a new initial load is required.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DHCDC_CORE023 - Structure of CDS view &1 has changed; see long text ?

  The SAP error message DHCDC_CORE023 indicates that the structure of a Core Data Services (CDS) view has changed. This typically occurs when there are modifications made to the underlying data model or the CDS view itself, which can lead to inconsistencies or issues when trying to access or utilize the view.
  Cause:
  
  Changes in Underlying Tables: If the tables or fields that the CDS view is based on have been altered (e.g., fields added, removed, or changed), this can lead to structural changes in the CDS view.
  Modifications to the CDS View: If the CDS view has been modified directly (e.g., changes in the SELECT statement, joins, or annotations), it can also trigger this error.
  Transport Issues: If the CDS view was transported from one system to another and the target system does not have the same underlying structure, this error may occur.
  Versioning Issues: If there are multiple versions of the CDS view in different environments, inconsistencies can arise.
  
  Solution:
  
  Check the Long Text: The error message usually has a long text that provides more details about the specific issue. You can access this by clicking on the message or using transaction code SE91 to view the message class and long text.
  Review Changes: Investigate any recent changes made to the CDS view or its underlying tables. This can be done by checking the change logs or version history.
  Re-activate the CDS View: Sometimes, simply re-activating the CDS view in the ABAP Development Tools (ADT) or SE11 can resolve the issue.
  Adjust Dependent Objects: If there are dependent objects (like other CDS views, OData services, or reports) that rely on the changed CDS view, they may also need to be adjusted or re-activated.
  Check Transport Requests: If the issue arose after a transport, ensure that all related objects were transported correctly and that the target system is in sync with the source system.
  Consult Documentation: Review SAP documentation or notes related to the specific CDS view for any known issues or required adjustments.
  
  Related Information:
  
  CDS Views: Core Data Services are a way to define semantic data models in SAP, allowing for complex data retrieval and manipulation.
  ABAP Development Tools (ADT): A set of tools for developing ABAP applications, including the ability to create and manage CDS views.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE80 (Object Navigator), and SE91 (Message Class) for troubleshooting.
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific CDS view or the error message.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP Basis or development team for further investigation.