How To Fix OO302 - Parameter &1 &2 &3: Inconsistency in method/event &1 &2 (MTDTYPE)

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 302

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

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OO302 - Parameter &1 &2 &3: Inconsistency in method/event &1 &2 (MTDTYPE) ?

  The SAP error message OO302 indicates an inconsistency in a method or event related to an object-oriented programming construct in ABAP. This error typically arises when there is a mismatch or inconsistency in the definitions of methods or events in a class or interface.
  Cause:
  
  
  Inconsistent Method/Event Definition: The method or event defined in the class or interface does not match the expected signature or parameters. This can happen if:
  
  The method/event was changed in the class but not in the interface or vice versa.
  There are multiple versions of the class/interface, and the system is referencing an outdated version.
  There are issues with the inheritance hierarchy where a subclass does not correctly implement a method from its superclass.
  
  
  
  Transport Issues: If changes were transported from one system to another (e.g., from development to production), inconsistencies may arise if the transport did not include all necessary objects or if there were conflicts during the transport.
  
  
  Code Changes: Manual changes in the code that do not adhere to the defined method/event signatures can also lead to this error.
  
  
  Solution:
  
  
  Check Method/Event Definitions: Review the method/event definitions in the class and interface to ensure they are consistent. Make sure that the parameters, return types, and visibility (public, protected, private) match.
  
  
  Re-implement Methods: If you have overridden methods in subclasses, ensure that the method signatures match those in the superclass or interface.
  
  
  Transport Consistency: If the error occurred after a transport, check the transport logs to ensure that all relevant objects were transported correctly. You may need to re-transport the objects or manually adjust the definitions.
  
  
  Activate Objects: Sometimes, simply activating the class or interface again can resolve the inconsistency. Go to the relevant class or interface in the ABAP Workbench and activate it.
  
  
  Check for Syntax Errors: Ensure there are no syntax errors in the code that could be causing the inconsistency.
  
  
  Debugging: If the issue persists, use the ABAP debugger to trace where the inconsistency is occurring. This can help identify the specific method or event causing the problem.
  
  
  Related Information:
  
  ABAP Workbench: Use transaction SE80 or SE24 to navigate to the class or interface and check the method/event definitions.
  Transport Organizer: Use transaction SE09 or SE10 to check transport requests and ensure all necessary objects were included.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address known issues related to this error message.
  
  If the problem continues after following these steps, consider reaching out to SAP support or consulting with a developer who has experience with object-oriented programming in ABAP.