How To Fix EU803 - Specify a function module

EU803 - Overview

• Message type: E = Error

• Message class: EU - Development Environment

• Message number: 803

• Message text: Specify a function module

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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EU803 - Details

• The SAP error message EU803 ("Specify a function module") typically occurs when a function module is expected but not provided in the context of a specific operation, such as when creating or modifying a function group or when calling a function module in a program.
  
  Cause:
  
  Missing Function Module: The error usually indicates that a required function module has not been specified in the relevant configuration or code.
  Incorrect Configuration: If you are working with a custom development or enhancement, the function module may not be properly defined or activated.
  Transport Issues: If the function module was recently transported from another system, it may not have been properly imported or activated in the target system.
  
  
  Solution:
  
  Specify the Function Module: Ensure that you have specified the correct function module in your code or configuration. If you are calling a function module, make sure to provide its name correctly.
  Check Function Module Existence: Use transaction SE37 to check