How To Fix DBOSC520 - Error while calling method; method '&1' must be implemented in subclass

DBOSC520 - Overview

• Message type: E = Error

• Message class: DBOSC -

• Message number: 520

• Message text: Error while calling method; method '&1' must be implemented in subclass

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 DBOSC520 - Error while calling method; method '&1' must be implemented in subclass ?

  The SAP error message DBOSC520 indicates that there is an issue with a method that is expected to be implemented in a subclass but is not found. This typically occurs in the context of Object-Oriented Programming (OOP) in ABAP, where a method is defined in a superclass but is expected to be overridden in a subclass.
  
  Cause:
  
  Missing Implementation: The subclass that is supposed to implement the method has not provided an implementation for the method specified in the error message.
  Incorrect Class Hierarchy: The subclass may not be correctly inheriting from the superclass where the method is defined.
  Method Signature Mismatch: The method in the subclass may have a different signature (parameters, return type) than what is defined in the superclass.
  Abstract Method: If the method in the superclass is declared as abstract, it must be implemented in any concrete subclass.
  
  
  Solution:
  
  Implement the Method: Go to the subclass that is mentioned in the error message