How To Fix E4057 - Include names must be unique

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 057

• Message text: Include names must be unique

What causes this issue?

You attempted to copy an include name, but used the same name for the
copy. This results is a new development class assignment, which is not
allowed.

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

System Response

How to fix this error?

Use a different name.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E4057 - Include names must be unique ?

  The SAP error message E4057, which states "Include names must be unique," typically occurs during the creation or modification of an ABAP program or include file. This error indicates that there is a naming conflict with an include file or program that already exists in the system.
  Cause:
  
  Duplicate Include Names: The most common cause of this error is that you are trying to create an include file with a name that already exists in the SAP system. Each include file must have a unique name to avoid conflicts.
  Namespace Issues: If you are working in a system with multiple namespaces, you might inadvertently try to create an include in a namespace that is already occupied.
  Transport Requests: If you are working with transport requests, there might be a conflict with includes that are being transported from another system.
  
  Solution:
  
  Check Existing Includes: Before creating a new include, check the existing includes in the system. You can do this by using transaction SE80 (Object Navigator) or SE11 (Data Dictionary) to search for the include name.
  Rename the Include: If you find that the include name you want to use is already taken, consider renaming your include to something unique.
  Use a Different Namespace: If applicable, ensure that you are using the correct namespace for your includes, especially in systems that have multiple namespaces.
  Transport Management: If the issue is related to transport requests, ensure that there are no pending transports that might be causing the conflict. You may need to coordinate with your transport management team.
  Check for Deletion: If you believe the include should not exist, check if it has been marked for deletion or if it exists in a different client.
  
  Related Information:
  
  Transaction Codes: Use SE80 (Object Navigator) or SE11 (Data Dictionary) to manage and view includes.
  Naming Conventions: Familiarize yourself with the naming conventions and guidelines for includes in your organization to avoid conflicts.
  Documentation: Refer to SAP documentation or your organization's development guidelines for best practices in naming and managing includes.
  
  By following these steps, you should be able to resolve the E4057 error and successfully create or modify your include files in SAP.