How To Fix OL655 - Freezing of API methods is possible only in the original object type

SAP Error Message - Details

• Message type: E = Error

• Message class: OL - Workflow object types: Run-time system

• Message number: 655

• Message text: Freezing of API methods is possible only in the original object type

What causes this issue?

You tried to freeze an API method which was inherited from another
object type. However, interfaces can only be frozen in the original
object type.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

You should freeze the interface in the original object type.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OL655 - Freezing of API methods is possible only in the original object type ?

  The SAP error message OL655, which states "Freezing of API methods is possible only in the original object type," typically occurs in the context of using the Object Services API in SAP, particularly when dealing with Business Object Processing (BOPF) or similar frameworks.
  Cause:
  This error generally arises when there is an attempt to freeze (or lock) an API method on an object that is not of the original type. In SAP, freezing an API method is a way to prevent further changes to the object state, and it is only allowed on the original object type. If you try to freeze a method on a derived or modified object type, the system will raise this error.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Object Type: Ensure that you are working with the original object type when attempting to freeze the API method. You can do this by verifying the object type in your code or configuration.
  
  
  Use Correct API Calls: Make sure that you are using the correct API calls that are intended for the original object type. If you are working with a derived object, you may need to adjust your logic to ensure you are referencing the original object.
  
  
  Review Code Logic: If you are manipulating object types in your code, review the logic to ensure that you are not inadvertently changing the object type before calling the freeze method.
  
  
  Debugging: Use debugging tools to trace the execution of your code and identify where the object type might be changing. This can help you pinpoint the exact location of the issue.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific API you are using to understand the requirements and limitations regarding freezing methods.
  
  
  Seek Help from SAP Community: If the issue persists, consider reaching out to the SAP community forums or support for additional insights or similar experiences from other users.
  
  
  Related Information:
  
  BOPF (Business Object Processing Framework): Understanding how BOPF works and its object lifecycle can help in managing object states effectively.
  API Documentation: Familiarize yourself with the specific API methods and their requirements in the SAP documentation.
  SAP Notes: Check for any relevant SAP Notes that might address this error or provide additional context.
  
  By following these steps, you should be able to resolve the OL655 error and ensure that your API method calls are correctly aligned with the object types you are working with.