How To Fix PO493 - &1 is an abstract class

SAP Error Message - Details

• Message type: E = Error

• Message class: PO - Spooler message

• Message number: 493

• Message text: &1 is an abstract class

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message PO493 - &1 is an abstract class ?

  The SAP error message "PO493 &1 is an abstract class" indicates that there is an attempt to instantiate or use an abstract class in a way that is not allowed. In object-oriented programming, an abstract class is a class that cannot be instantiated on its own and is meant to be subclassed. This error typically occurs in ABAP (Advanced Business Application Programming) when you try to create an object of an abstract class or call a method that is not implemented in the abstract class.
  Cause:
  
  Instantiation of Abstract Class: The most common cause is that the code is trying to create an instance of an abstract class directly.
  Method Call: The code may be trying to call a method that is defined in the abstract class but not implemented.
  Incorrect Class Reference: There might be a reference to an abstract class instead of a concrete subclass.
  
  Solution:
  
  Check Class Definition: Review the class definition to confirm that it is indeed an abstract class. Look for the keyword ABSTRACT in the class declaration.
  Use Subclass: Instead of trying to instantiate the abstract class, instantiate a concrete subclass that implements the abstract methods.
  Implement Abstract Methods: If you need to use the abstract class, ensure that you have a subclass that implements all the abstract methods defined in the abstract class.
  Code Review: Go through the code where the error occurs and ensure that you are not trying to create an instance of the abstract class directly.
  
  Related Information:
  
  Abstract Classes in ABAP: In ABAP, an abstract class is defined using the CLASS statement with the ABSTRACT keyword. It can contain abstract methods that must be implemented in subclasses.
  Error Handling: Implement error handling in your code to catch such issues early during development.
  Documentation: Refer to the SAP documentation for more details on object-oriented programming in ABAP, especially regarding abstract classes and interfaces.
  
  Example:
  If you have an abstract class defined as follows:
  CLASS my_abstract_class DEFINITION ABSTRACT.
    METHODS my_abstract_method ABSTRACT.
  ENDCLASS.
  You should create a subclass like this:
  CLASS my_concrete_class DEFINITION INHERITING FROM my_abstract_class.
    METHODS my_abstract_method IMPLEMENTATION.
  ENDCLASS.
  And then instantiate the subclass instead of the abstract class:
  DATA(lo_instance) = NEW my_concrete_class( ).
  By following these steps, you should be able to resolve the error PO493.