How To Fix E4026 - Target message class & exists already

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 026

• Message text: Target message class & exists already

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message E4026 - Target message class & exists already ?

  The SAP error message E4026 ("Target message class & exists already") typically occurs when you are trying to create a new message class in the SAP system, but a message class with the same name already exists. This can happen during the development of custom programs or enhancements when you are trying to define new messages for user interfaces or reports.
  Cause:
  
  The primary cause of this error is an attempt to create a message class that has the same name as an existing message class in the SAP system. Message classes are used to group messages for different applications, and each message class must have a unique identifier.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Message Classes:
  
  Use transaction code SE91 (Message Class Maintenance) to check if the message class you are trying to create already exists. Enter the name of the message class in the appropriate field and see if it is listed.
  
  
  
  Choose a Different Name:
  
  If the message class already exists, you will need to choose a different name for your new message class. Ensure that the new name follows the naming conventions and is unique.
  
  
  
  Modify Existing Message Class:
  
  If the existing message class is relevant to your development, you can consider modifying it instead of creating a new one. You can add new messages to the existing class using transaction SE91.
  
  
  
  Transport Requests:
  
  If you are working in a development environment and plan to transport your changes to a production environment, ensure that the message class is included in the transport request.
  
  
  
  Check for Naming Conflicts:
  
  Ensure that there are no naming conflicts with standard SAP message classes or other custom message classes in your namespace.
  
  
  
  Related Information:
  
  Message Class Naming Conventions: SAP message classes typically follow a naming convention that includes a prefix indicating the application area or the developer's namespace.
  Transaction Codes:
  
  SE91: For creating and managing message classes.
  SE80: Object Navigator, where you can also manage message classes.
  
  
  Documentation: Refer to SAP Help documentation for more details on message classes and their usage in custom development.
  
  By following these steps, you should be able to resolve the E4026 error and successfully create or modify your message class in SAP.