How To Fix P0735 - Definition of in and output parameters only possible for functions

P0735 - Overview

• Message type: E = Error

• Message class: P0 - Messages for Transactions PE01, PE02 and PE03

• Message number: 735

• Message text: Definition of in and output parameters only possible for functions

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message P0735 - Definition of in and output parameters only possible for functions ?

  The SAP error message P0735, which states "Definition of in and output parameters only possible for functions," typically occurs when there is an issue with the definition of parameters in a function module or method in ABAP (Advanced Business Application Programming). This error indicates that the system is expecting a function module or method where input and output parameters can be defined, but it is encountering a situation where this is not possible.
  Causes:
  
  Incorrect Definition: The function module or method may not be defined correctly, leading to issues with parameter definitions.
  Using a Subroutine Instead of a Function Module: If you are trying to define parameters for a subroutine (FORM) instead of a function module (FUNCTION), this error will occur.
  Incompatible Context: The context in which you are trying to define the parameters may not support parameter definitions, such as within a class or interface where it is not allowed.
  Syntax Errors: There may