How To Fix E4102 - Only delete function module includes using Function Builder

E4102 - Overview

• Message type: E = Error

• Message class: E4 - Program maintenance functions within development system

• Message number: 102

• Message text: Only delete function module includes using Function Builder

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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E4102 - Details

• The SAP error message E4102, which states "Only delete function module includes using Function Builder," typically occurs when there is an attempt to delete a function module that is included in a function group or when there are issues related to the function module's dependencies.
  
  Cause:
  
  Function Module Dependencies: The function module you are trying to delete may be included in a function group or may have dependencies on other function modules or includes.
  Authorization Issues: The user may not have the necessary authorizations to delete function modules.
  Incorrect Deletion Method: The deletion might be attempted through the wrong transaction or method.
  
  
  Solution:
  
  
  Check Dependencies: Before deleting a function module, check if it is included in any function group or if it is being used by other function modules. You can do this by:
  
  Using transaction SE37 (Function Module) to view the function module.
  Checking the "Where-Used List" to see if it is referenced elsewhere.
  
  
  
  Use Function Builder: Ensure