How To Fix OL847 - Method '&' of '&' contains additional mandatory parameters '&'

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 847

• Message text: Method '&' of '&' contains additional mandatory parameters '&'

What causes this issue?

The method is inherited from a super type or interface type. The
parameter string of this method can only be extended by optional
parameters. However, additional mandatory parameters were defined.

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?

Please remove the 'mandatory' flag from the parameters concerned or
delete the parameter from the parameter string of the method.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OL847 - Method '&' of '&' contains additional mandatory parameters '&' ?

  The SAP error message OL847 indicates that a method in an ABAP class is being called without providing all the mandatory parameters that are required by that method. This error typically occurs in object-oriented programming within SAP when the method signature specifies certain parameters as mandatory, but they are not supplied during the method call.
  Cause:
  
  Missing Parameters: The most common cause of this error is that the method being called requires additional parameters that were not provided in the call.
  Incorrect Method Signature: The method signature may have changed (e.g., additional parameters were added) and the calling code has not been updated accordingly.
  Dynamic Calls: If the method is being called dynamically (e.g., using CALL METHOD), the parameters may not be correctly passed.
  
  Solution:
  
  Check Method Signature: Review the method definition in the ABAP class to identify the mandatory parameters. Ensure that all required parameters are included in the method call.
  Update Calling Code: Modify the code that calls the method to include the missing parameters. For example:
  CALL METHOD class_name=>method_name
    EXPORTING
      param1 = value1
      param2 = value2
      ...  " Include all mandatory parameters
  
  Review Changes: If the method has been recently modified, check the change logs or documentation to understand what parameters have been added and update the calling code accordingly.
  Testing: After making the necessary changes, test the code to ensure that the error is resolved and that the method behaves as expected.
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP documentation for ABAP programming to understand method definitions and parameter handling.
  Debugging: Use the ABAP debugger to step through the code and inspect the method calls to identify where the parameters are missing.
  Code Review: Conduct a code review with peers to ensure that the method calls are correctly implemented and adhere to the latest method signatures.
  
  By following these steps, you should be able to resolve the OL847 error and ensure that your method calls are correctly formed with all required parameters.