How To Fix SGSUB004 - &1 is already defined as data type in &2 &3

SGSUB004 - Overview

• Message type: E = Error

• Message class: SGSUB - Central Storage for Data Types and BAdIs

• Message number: 004

• Message text: &1 is already defined as data type in &2 &3

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SGSUB004 - &1 is already defined as data type in &2 &3 ?

  The SAP error message SGSUB004 indicates that there is a conflict in the definition of a data type. Specifically, it means that a data type with the name specified in the error message is already defined in the context of the specified program or structure. This typically occurs when you are trying to define a data type that has already been defined elsewhere in the same namespace or context.
  
  Cause:
  
  Duplicate Definition: The most common cause is that the data type you are trying to create or redefine already exists in the system.
  Namespace Conflicts: If you are working in a custom namespace, there might be a conflict with standard SAP data types or other custom types.
  Inconsistent Naming: Sometimes, similar names can lead to confusion, especially if the naming conventions are not strictly followed.
  
  
  Solution:
  
  
  Check Existing Definitions: 
  
  Use transaction SE11 (Data Dictionary) to search for the data type in question. Make sure that it