How To Fix SADL_GTK_GEN021 - Class &1 does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GTK_GEN - SADL GTK Generation Messages

• Message number: 021

• Message text: Class &1 does not exist

What causes this issue?

During Activation of a CDS-View with OData.publish-Annotation a
MPC-Class will be created with the name of CDS-View.

System Response

The class was not generated-

How to fix this error?

Activate the CDS-view. If this does not create the MPC-Class create the
Class with this name manually with transaction SE24 without any logic.
Choose package and transport request from the CDS-view. This will at
least create a valid TADIR-entry. Delete the class in transaction SE24
and activate the CDS-view again.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GTK_GEN021 - Class &1 does not exist ?

  The SAP error message SADL_GTK_GEN021 indicates that a class specified in your SAP system does not exist. This error typically arises in the context of the SAP ABAP programming environment, particularly when working with the SAP Data Access Layer (SADL) or when trying to access a specific class that is expected to be available in the system.
  Cause:
  
  Non-existent Class: The class specified in the error message does not exist in the system. This could be due to a typo in the class name or the class not being created or activated.
  Transport Issues: If the class was recently transported from another system, it may not have been transported correctly or may not exist in the target system.
  Authorization Issues: The user may not have the necessary authorizations to access the class, leading to the perception that it does not exist.
  Namespace Issues: The class might be in a different namespace that is not accessible in the current context.
  
  Solution:
  
  
  Check Class Existence:
  
  Use transaction code SE24 (Class Builder) to check if the class exists. Enter the class name and see if it is available.
  If it does not exist, you may need to create it or check with your development team.
  
  
  
  Correct Typo:
  
  Ensure that the class name is spelled correctly in your code or configuration.
  
  
  
  Transport Check:
  
  If the class was supposed to be transported, check the transport logs to ensure it was successfully imported into the target system.
  
  
  
  Authorization Check:
  
  Verify that the user has the necessary authorizations to access the class. You can check this using transaction SU53 after the error occurs.
  
  
  
  Namespace Verification:
  
  Ensure that you are using the correct namespace. If the class is in a different namespace, you may need to adjust your code or configuration to reference it correctly.
  
  
  
  Re-creation:
  
  If the class is missing and you have the source code or definition, you may need to recreate it in the system.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SE24: Class Builder
  SE80: Object Navigator
  SE11: Data Dictionary (for checking related database objects)
  SU53: Authorization Check
  
  
  
  Documentation: Refer to SAP Help documentation for SADL and ABAP programming for more context on how classes are used and managed.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis or development team for further assistance.