How To Fix V0306 - Source = F requires FORM routine without follow-on parameters

SAP Error Message - Details

• Message type: E = Error

• Message class: V0 - Screen sequence control messages

• Message number: 306

• Message text: Source = F requires FORM routine without follow-on parameters

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message V0306 - Source = F requires FORM routine without follow-on parameters ?

  The SAP error message V0306, which states "Source = F requires FORM routine without follow-on parameters," typically occurs in the context of ABAP programming when there is an issue with the way a FORM routine is defined or called. This error is specifically related to the use of FORM routines that are expected to be called without any parameters, but the calling code is attempting to pass parameters to it.
  Cause:
  
  Incorrect FORM Definition: The FORM routine is defined without parameters, but the calling code is trying to pass parameters to it.
  Calling Convention: The calling code may be using a syntax that implies parameters are being passed, which is not compatible with the FORM routine's definition.
  Misunderstanding of Source Types: The error message indicates that the source type is 'F', which refers to a FORM routine. If the routine is not designed to accept parameters, any attempt to do so will trigger this error.
  
  Solution:
  
  
  Check FORM Routine Definition: Review the definition of the FORM routine to ensure it is defined without parameters. The definition should look like this:
  FORM routine_name.
      " Your code here
  ENDFORM.
  
  
  Modify the Calling Code: If the FORM routine is indeed defined without parameters, ensure that the calling code does not attempt to pass any parameters. The call should look like this:
  PERFORM routine_name.
  
  
  Add Parameters if Needed: If the logic requires parameters to be passed, consider modifying the FORM routine to accept parameters. The definition would then look like this:
  FORM routine_name USING param1 TYPE data_type1 param2 TYPE data_type2.
      " Your code here
  ENDFORM.
  And the call would be:
  PERFORM routine_name USING value1 value2.
  
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP ABAP documentation for more details on FORM routines and their usage.
  Debugging: Use the ABAP debugger to step through the code and identify where the error is being triggered.
  SAP Community: Engage with the SAP Community forums for additional insights and similar issues faced by other developers.
  
  By ensuring that the FORM routine is correctly defined and called, you should be able to resolve the V0306 error.