How To Fix SGSUB002 - &1 is already defined as data type in &2 &3 from &4

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 002

• Message text: &1 is already defined as data type in &2 &3 from &4

What causes this issue?

The name &V1& is already used for a data type in &V2& &V3& from the ABAP
system &V4&.
Both object types are in the common <DS:TX.DD_GSUBT_NAMESPACE>namespace
for global types</>; therefore, you have a name conflict here.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Create the object under a different name.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SGSUB002 - &1 is already defined as data type in &2 &3 from &4 ?

  The SAP error message SGSUB002 indicates that there is a conflict in the definition of a data type in the context of ABAP programming. Specifically, it means that a data type (or structure) is already defined in the specified context, which is causing a naming conflict.
  Cause:
  The error typically arises due to one of the following reasons:
  
  Duplicate Definition: The data type you are trying to define has already been defined elsewhere in the program or in the included programs.
  Namespace Conflict: If you are working in a system with multiple namespaces, there might be a conflict between different namespaces.
  Inclusion of Multiple Programs: If you are including multiple programs or function groups that define the same data type, this can lead to this error.
  Changes in Data Dictionary: If there have been recent changes in the data dictionary (like adding or modifying data types), it might lead to conflicts.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check for Duplicates: 
  
  Search your program and any included programs for the definition of the data type mentioned in the error message. Ensure that you are not redefining it.
  
  
  
  Use Unique Names: 
  
  If you need to define a new data type, ensure that it has a unique name that does not conflict with existing definitions.
  
  
  
  Review Includes: 
  
  Check the includes and function groups that your program is using. Make sure that they do not contain conflicting definitions.
  
  
  
  Data Dictionary Check: 
  
  If the data type is defined in the Data Dictionary (SE11), check there to see if it is already defined. If it is, you may need to use that existing definition instead of creating a new one.
  
  
  
  Namespace Management: 
  
  If you are working in a multi-namespace environment, ensure that you are using the correct namespace for your data types.
  
  
  
  Recompile: 
  
  After making changes, recompile your program to see if the error persists.
  
  
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), and SE38 (ABAP Editor) to investigate and manage data types.
  Documentation: Refer to SAP documentation for guidelines on naming conventions and data type definitions to avoid conflicts.
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to this error message.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.