How To Fix OO420 - Class/Interf. &1 contains stored procedures, cannot be changed in SAP GUI

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 420

• Message text: Class/Interf. &1 contains stored procedures, cannot be changed in SAP GUI

What causes this issue?

Changing classes/interfaces containing ABAP Managed Database Procedures
is not supported by Class Builder (in SAP GUI).
The class/interface &v1& implements or comprises the interface
IF_AMDP_MARKER_HDB. This means, it provides the option to add ABAP
Managed Database Procedures to the class/interface.

System Response

Class Builder remains in display mode.

How to fix this error?

Use ABAP development tools for SAP NetWeaver (ADT) to edit the
class/interface.

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 OO420 - Class/Interf. &1 contains stored procedures, cannot be changed in SAP GUI ?

  The SAP error message OO420 indicates that you are trying to modify a class or interface that contains stored procedures (also known as "method implementations") directly in the SAP GUI, which is not allowed. This restriction is in place because stored procedures are typically associated with database operations and require specific handling that cannot be performed through the standard GUI interface.
  Cause:
  
  Stored Procedures: The class or interface you are trying to modify contains stored procedures, which are defined in the database and cannot be edited through the SAP GUI.
  Development Environment: You might be using a development environment that does not support direct modifications to classes/interfaces with stored procedures.
  
  Solution:
  
  
  Use the Appropriate Tool: If you need to modify the stored procedures, you should use the appropriate database management tools or transaction codes that allow you to manage stored procedures. For example, you might need to use tools like SAP HANA Studio or other database-specific tools depending on your database.
  
  
  Check for Dependencies: Before making changes, ensure that you understand the dependencies and impacts of modifying the stored procedures on the overall application.
  
  
  Transport Requests: If you are working in a development environment, ensure that any changes you make are properly captured in transport requests for deployment to other environments (e.g., QA, Production).
  
  
  Consult Documentation: Refer to SAP documentation or your organization's development guidelines for best practices on handling stored procedures and related classes/interfaces.
  
  
  Seek Help from Basis or ABAP Team: If you are unsure how to proceed, consult with your Basis or ABAP development team for assistance. They may have specific procedures in place for handling such changes.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or updates related to this error message.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE80 (Object Navigator) or SE37 (Function Module) that may help you navigate the development environment more effectively.
  Database Documentation: If you are using a specific database (like HANA, Oracle, etc.), refer to the database documentation for managing stored procedures.
  
  By following these steps, you should be able to address the OO420 error and proceed with your development tasks effectively.