How To Fix APS_CKE012 - Republish complete CDS view stack to add missing keys

SAP Error Message - Details

• Message type: E = Error

• Message class: APS_CKE - Message class for CDS key user editor

• Message number: 012

• Message text: Republish complete CDS view stack to add missing keys

What causes this issue?

Prerequisite
Before making any changes to a custom CDS view, check if the respective
custom CDS view has any dependencies to other objects. You can find all
dependencies in the Extensibility Inventory app. If the underlying data
sources contain errors, these errors must be corrected first.
Your custom CDS view is missing keys from the primary data source. A
custom view must contain all key from underlying data sources to
properly inherit the access protection.

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?

1. Search for your custom CDS view in the Extensibility Inventory app to
see the complete CDS view stack
2. Start republishing from the lowest primary data source (root view)
and republish upwards until you have reached the top-most custom CDS
view of the stack. Before you republish, the missing key fields must be
added manually.

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 APS_CKE012 - Republish complete CDS view stack to add missing keys ?

  The SAP error message APS_CKE012, which states "Republish complete CDS view stack to add missing keys," typically occurs in the context of Core Data Services (CDS) views in SAP systems. This error indicates that there are missing keys in the CDS view stack that need to be addressed to ensure proper functionality and data retrieval.
  Cause:
  
  Missing Keys: The primary cause of this error is that the CDS view is missing key fields that are necessary for the view to function correctly. Keys are essential for uniquely identifying records in a database table or view.
  Changes in Underlying Tables: If there have been changes in the underlying database tables (like adding or removing fields), the CDS view may not reflect these changes, leading to missing keys.
  Inconsistent Metadata: There may be inconsistencies in the metadata of the CDS views, especially if they are dependent on other views or tables that have been modified.
  
  Solution:
  
  
  Republish the CDS View: The immediate solution is to republish the complete CDS view stack. This can be done using the following steps:
  
  Go to the ABAP Development Tools (ADT) in Eclipse or the SAP GUI.
  Navigate to the CDS view that is causing the error.
  Right-click on the view and select the option to "Activate" or "Republish."
  This action will refresh the metadata and ensure that all keys are correctly recognized.
  
  
  
  Check for Missing Keys: Review the definition of the CDS view to ensure that all necessary key fields are included. If any key fields are missing, add them to the view definition.
  
  
  Review Dependencies: If the CDS view is dependent on other views or tables, ensure that those dependencies are also correctly defined and activated.
  
  
  Transport Requests: If the changes were made in a development environment, ensure that the changes are properly transported to the quality and production environments.
  
  
  Check for Errors in the CDS View Definition: Look for any syntax errors or issues in the CDS view definition that might prevent it from being activated correctly.
  
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) is a framework for defining and consuming semantically rich data models in SAP systems. CDS views are used to create virtual data models that can be consumed by various applications.
  Activation and Republish: Activating a CDS view ensures that the view is compiled and its metadata is updated in the database. Republishing may be necessary after changes to the underlying data model.
  SAP Notes and Documentation: For more detailed troubleshooting, refer to SAP Notes related to CDS views and the specific error message. The SAP Help Portal also provides documentation on CDS views and their usage.
  
  By following these steps, you should be able to resolve the APS_CKE012 error and ensure that your CDS views are functioning correctly.