How To Fix VK391 - Call parameter & for function module & is incomplete

VK391 - Overview

• Message type: E = Error

• Message class: VK - Pflege und Bearbeitung von Konditionen

• Message number: 391

• Message text: Call parameter & for function module & is incomplete

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message VK391 - Call parameter & for function module & is incomplete ?

  The SAP error message VK391, which states "Call parameter & for function module & is incomplete," typically indicates that a function module is being called with missing or incomplete parameters. This can occur in various scenarios, particularly when dealing with custom ABAP programs or enhancements.
  
  Cause:
  
  Missing Parameters: The function module being called requires certain parameters that are not being provided in the call.
  Incorrect Parameter Types: The parameters being passed may not match the expected data types or structures defined in the function module.
  Incorrect Function Module Usage: The function module may not be intended for the way it is being used, or it may require additional setup or context.
  Changes in Function Module: If the function module has been modified (e.g., added parameters) and the calling program has not been updated accordingly, this error can occur.
  
  
  Solution:
  
  Check Function Module Documentation: Review the documentation for the function module to understand the required parameters and their