How To Fix OO301 - Parameter &1 &2 &3: Inconsistency in method/event &1 &2 (CMPTYPE)

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 301

• Message text: Parameter &1 &2 &3: Inconsistency in method/event &1 &2 (CMPTYPE)

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 OO301 - Parameter &1 &2 &3: Inconsistency in method/event &1 &2 (CMPTYPE) ?

  The SAP error message OO301 indicates an inconsistency in a method or event related to a component type (CMPTYPE). This error typically arises in the context of Object-Oriented Programming (OOP) within SAP ABAP, particularly when dealing with classes, methods, and events.
  Cause:
  The error can be caused by several factors, including:
  
  Inconsistent Method/Event Definitions: The method or event may be defined in a class but not implemented correctly in the subclass or may have been deleted or renamed.
  Inheritance Issues: If a subclass does not properly inherit from a superclass, or if there are changes in the superclass that are not reflected in the subclass, inconsistencies can arise.
  Changes in Component Type: If the component type (CMPTYPE) has been modified (e.g., changes in the interface or abstract class), it can lead to inconsistencies in the methods or events that depend on it.
  Transport Issues: If changes were transported from one system to another (e.g., from development to production) without proper synchronization, it can lead to inconsistencies.
  
  Solution:
  To resolve the OO301 error, you can follow these steps:
  
  
  Check Method/Event Definitions: Verify that the method or event is correctly defined in the class and that it matches the expected signature. Ensure that all parameters and return types are consistent.
  
  
  Review Inheritance: Check the inheritance hierarchy to ensure that the subclass correctly implements all methods and events from the superclass. If there are any missing implementations, add them.
  
  
  Synchronize Changes: If the component type has been modified, ensure that all dependent classes and methods are updated accordingly. This may involve regenerating the class or re-implementing methods.
  
  
  Transport Consistency: If the issue arose after a transport, check the transport logs for any errors or inconsistencies. Ensure that all related objects were transported correctly.
  
  
  Recompile Classes: Sometimes, recompiling the affected classes can resolve inconsistencies. You can do this by using transaction SE80 or SE24.
  
  
  Check for Syntax Errors: Ensure that there are no syntax errors in the class or method definitions that could be causing the inconsistency.
  
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SE80 (Object Navigator) or SE24 (Class Builder) to navigate and check the class definitions.
  Documentation: Refer to SAP documentation on Object-Oriented ABAP programming for best practices and guidelines.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address specific issues related to this error message.
  
  If the problem persists after following these steps, consider reaching out to SAP support or consulting with a developer experienced in ABAP OOP for further assistance.