How To Fix CM_EHFND_FW_WFF305 - PCO Class does not implement the required interface IF_EHFND_WFF_PCO

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_EHFND_FW_WFF - Messages for Exception Obj. of EHS/PS&S Workflow Foundation

• Message number: 305

• Message text: PCO Class does not implement the required interface IF_EHFND_WFF_PCO

What causes this issue?

The process definition defines a PCO class that does not implement the
required interface IF_EHFND_WFF_PCO.
INCLUDE FND_PCO_CLASS_MESSAGES OBJECT DOKU ID TX

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?

In the Customizing activity <LS>Specify Process Definitions</>, enter a
valid PCO class that has implemented the interface IF_EHFND_WFF_PCO in
your process.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CM_EHFND_FW_WFF305 - PCO Class does not implement the required interface IF_EHFND_WFF_PCO ?

  The SAP error message CM_EHFND_FW_WFF305 indicates that a particular PCO (Process Control Object) class does not implement the required interface IF_EHFND_WFF_PCO. This error typically arises in the context of SAP's Extended Hub Framework or when working with specific business processes that rely on the PCO framework.
  Cause:
  
  Missing Implementation: The PCO class that is being referenced does not implement the required interface. This could be due to a custom implementation that was not properly defined.
  Incorrect Configuration: The configuration settings for the PCO might be incorrect, leading to the system not recognizing the implementation.
  Version Mismatch: There may be a version mismatch between the PCO class and the expected interface, especially if there have been recent updates or changes in the system.
  Transport Issues: If the PCO class was transported from another system, it might not have been transported correctly, leading to missing implementations.
  
  Solution:
  
  
  Check Class Implementation: Verify that the PCO class in question implements the interface IF_EHFND_WFF_PCO. You can do this by navigating to the class in the ABAP Workbench (SE80 or SE24) and checking its interface implementations.
  
  
  Implement Missing Methods: If the class does not implement the required interface, you will need to add the necessary methods as defined in the interface. This may involve coding and testing to ensure that the implementation meets the business requirements.
  
  
  Review Configuration: Check the configuration settings related to the PCO in the relevant customizing transactions. Ensure that all necessary settings are correctly defined.
  
  
  Check for Updates: If there have been recent updates or changes to the system, ensure that all components are compatible and that the PCO class is up to date.
  
  
  Transport Validation: If the class was transported, validate that the transport was successful and that all dependencies were included. You may need to re-transport the class or its dependencies.
  
  
  Consult Documentation: Review SAP documentation or notes related to the specific PCO and interface to ensure that you are following best practices and guidelines.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Debugging: If you have access to debugging tools, you can set breakpoints in the PCO class to trace the execution and identify where the implementation is failing.
  
  By following these steps, you should be able to diagnose and resolve the error CM_EHFND_FW_WFF305 effectively.