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How To Fix SWF_SLS006 - &1 is not a valid callback class


SAP Error Message - Details

  • Message type: E = Error

  • Message class: SWF_SLS - Message Class for Deadline Monitoring (Deadline Service)

  • Message number: 006

  • Message text: &1 is not a valid callback class

  • Show details Hide details
  • What causes this issue?

    The deadline to be created has the incorrect callback class. Callback
    classes must implement a callback interface.

    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?

    Enter a callback class that implements a deadline monitoring callback
    interface.

    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 SWF_SLS006 - &1 is not a valid callback class ?

    The SAP error message SWF_SLS006 indicates that the specified callback class is not valid. This error typically occurs in the context of SAP Business Workflow when the system is unable to find or recognize the specified class that is supposed to handle a callback function.

    Cause:

    1. Incorrect Class Name: The class name specified in the workflow configuration may be misspelled or incorrect.
    2. Class Not Implemented: The callback class may not have been implemented or activated in the system.
    3. Namespace Issues: The class might be in a different namespace that is not accessible or recognized by the workflow.
    4. Authorization Issues: The user executing the workflow may not have the necessary authorizations to access the callback class.
    5. Transport Issues: If the class was recently transported from another system, it may not have been properly imported or activated.

    Solution:

    1. Verify Class Name: Check the workflow configuration to ensure that the class name is spelled correctly and matches the actual class in the system.
    2. Check Class Implementation: Ensure that the callback class has been implemented and is active. You can do this by navigating to the class in the ABAP Workbench (transaction SE80 or SE24).
    3. Namespace Check: Confirm that the class is in the correct namespace and is accessible from the workflow context.
    4. Authorization Check: Ensure that the user has the necessary authorizations to execute the workflow and access the callback class.
    5. Transport Validation: If the class was transported, check the transport logs to ensure that it was successfully imported and activated in the target system.
    6. Debugging: If the issue persists, consider debugging the workflow to trace where the error occurs and gather more information about the context in which the callback class is being called.

    Related Information:

    • Transaction Codes: Use transaction codes like SE80 (Object Navigator) and SE24 (Class Builder) to check the class definition and implementation.
    • Workflow Configuration: Review the workflow definition in transaction SWDD (Workflow Builder) to ensure that the callback class is correctly assigned.
    • SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
    • Documentation: Refer to SAP documentation on Business Workflow for more details on callback classes and their usage.

    By following these steps, you should be able to identify and resolve the issue related to the SWF_SLS006 error message.

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