How To Fix SHMA013 - The constructor class &1 must implement the interface &2

SAP Error Message - Details

• Message type: E = Error

• Message class: SHMA - Shared Objects: Management Messages

• Message number: 013

• Message text: The constructor class &1 must implement the interface &2

What causes this issue?

Whenever you have an area for shared objects that is to be set up
automatically, you must specify a class that contains the area
constructor as a method. This class must implement the interface
IF_SHM_BUILD_INSTANCE so that methods required for automatic setup are
available. However, a class was specified that does not implement the
interface IF_SHM_BUILD_INSTANCE.

System Response

Error message.

How to fix this error?

Enter a class that implements the correct 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 SHMA013 - The constructor class &1 must implement the interface &2 ?

  The SAP error message SHMA013 indicates that there is an issue with a constructor class in your ABAP program. Specifically, it means that the constructor class specified in the error message does not implement the required interface. This can occur in scenarios where you are trying to instantiate a class that is expected to implement a certain interface, but it does not.
  Cause:
  
  Missing Interface Implementation: The class defined as the constructor does not implement the interface that is expected.
  Incorrect Class Definition: The class might be incorrectly defined or there might be a typo in the class name or interface name.
  Changes in Class/Interface: If the interface was modified or the class was changed after the initial implementation, it may lead to this error.
  Namespace Issues: If the class or interface is in a different namespace and not properly referenced, it can lead to this error.
  
  Solution:
  
  
  Check Class Definition: Verify that the constructor class is correctly defined and that it implements the required interface. You can do this by checking the class definition in the ABAP Workbench (SE80 or SE24).
  
  
  Implement the Interface: If the class does not implement the required interface, you need to modify the class to implement it. This can be done by:
  
  Opening the class in the ABAP Workbench.
  Going to the "Interfaces" tab.
  Adding the required interface to the class.
  
  
  
  Check for Typos: Ensure that there are no typos in the class name or interface name in your code.
  
  
  Recompile the Class: After making changes, make sure to activate and recompile the class to ensure that the changes take effect.
  
  
  Check Dependencies: If the class or interface is part of a package, ensure that all dependencies are correctly activated and that there are no transport issues.
  
  
  Review Documentation: If you are using third-party libraries or frameworks, check their documentation to ensure that you are using the correct versions and that the interfaces have not changed.
  
  
  Related Information:
  
  ABAP Workbench (SE80): Use this tool to navigate to the class and interface definitions.
  Class Builder (SE24): This transaction allows you to create and modify classes and interfaces.
  Debugging: If the error occurs during runtime, consider using the ABAP debugger to trace the instantiation of the class and identify where the issue arises.
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific version of SAP you are using.
  
  By following these steps, you should be able to resolve the SHMA013 error and ensure that your constructor class correctly implements the required interface.