How To Fix OO421 - Class &1 contains stored procedures. No support for enhancements

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 421

• Message text: Class &1 contains stored procedures. No support for enhancements

What causes this issue?

There is currently no enhancement support for classes containing ABAP
Managed Database Procedures.
The class &v1& implements the interface IF_AMDP_MARKER_HDB. This means,
it provides the option to add ABAP Managed Database Procedures to the
class.

System Response

Class Builder remains in display mode.

How to fix this error?

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

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 OO421 - Class &1 contains stored procedures. No support for enhancements ?

  The SAP error message OO421 indicates that you are trying to enhance a class that contains stored procedures, which is not supported in the SAP system. This typically occurs when you attempt to create an enhancement or modification to a class that has been defined with stored procedures, as the system does not allow enhancements in such cases.
  
  Cause:
  
  Stored Procedures: The class you are trying to enhance contains stored procedures, which are not compatible with the enhancement framework in SAP.
  Enhancement Restrictions: SAP has certain restrictions on enhancing classes that include stored procedures to maintain data integrity and system stability.
  
  
  Solution:
  
  Review Class Design: Check if the class design can be modified to avoid the use of stored procedures. If possible, refactor the class to eliminate stored procedures.
  Use Alternative Approaches: Instead of enhancing the class directly, consider using other methods such as:
  Subclasses: Create a subclass that extends the functionality of the original class without