How To Fix SIW435 - Warning: This function module already exists and will be overwritten!!

SIW435 - Overview

• Message type: E = Error

• Message class: SIW - Service Implementation Workbench

• Message number: 435

• Message text: Warning: This function module already exists and will be overwritten!!

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SIW435 - Warning: This function module already exists and will be overwritten!! ?

  The SAP error message SIW435 indicates that a function module you are trying to create or activate already exists in the system, and the system is warning you that the existing function module will be overwritten. This can happen during the development of custom function modules or when importing transport requests that contain function modules.
  
  Cause:
  
  Duplicate Function Module: You are attempting to create a function module with the same name as an existing one.
  Transport Request: If you are importing a transport request that contains a function module with the same name as one already in the system, this warning will appear.
  Development Environment: In a development environment, multiple developers might be working on the same function module, leading to conflicts.
  
  
  Solution:
  
  
  Check Existing Function Module: Before creating a new function module, check if a function module with the same name already exists. You can do this by using transaction code SE37 (Function Builder) to