How To Fix OO651 - Could not generate pattern for the local class &

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 651

• Message text: Could not generate pattern for the local 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 OO651 - Could not generate pattern for the local class & ?

  The SAP error message OO651, which states "Could not generate pattern for the local class &," typically occurs during the generation of ABAP classes or when there are issues with the class definitions in the ABAP Workbench. This error can arise due to various reasons, including syntax errors, missing components, or inconsistencies in the class definition.
  Causes:
  
  Syntax Errors: There may be syntax errors in the class definition or implementation that prevent the generation of the class pattern.
  Missing Components: If the class references other classes, interfaces, or types that are not available or incorrectly defined, it can lead to this error.
  Inconsistent State: The class might be in an inconsistent state due to previous unsuccessful attempts to generate or activate it.
  Naming Conflicts: There may be naming conflicts with other classes or objects in the system.
  Transport Issues: If the class is part of a transport request, issues with the transport can lead to this error.
  
  Solutions:
  
  Check Syntax: Review the class definition and implementation for any syntax errors. Use the ABAP Editor (SE38 or SE80) to check for errors.
  Activate Dependencies: Ensure that all dependent classes, interfaces, and types are activated and available in the system.
  Re-activate the Class: Try to deactivate and then reactivate the class to resolve any inconsistencies.
  Check Naming: Ensure that the class name does not conflict with existing classes or objects in the system.
  Review Transport Requests: If the class is part of a transport request, ensure that the transport is correctly imported and that there are no issues with the transport logs.
  Check for Locks: Ensure that there are no locks on the class or related objects that might prevent generation.
  
  Related Information:
  
  Transaction Codes: Use transaction codes SE80 (Object Navigator) or SE24 (Class Builder) to navigate to the class and check its definition.
  Debugging: If the error persists, consider using the ABAP debugger to trace the generation process and identify the exact point of failure.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Community Forums: Consider searching or posting in SAP community forums for additional insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to identify and resolve the cause of the OO651 error in your SAP system.