How To Fix /SAPAPO/ABCCLASS077 - Class &1 is already defined

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/ABCCLASS -

• Message number: 077

• Message text: Class &1 is already defined

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 /SAPAPO/ABCCLASS077 - Class &1 is already defined ?

  The SAP error message /SAPAPO/ABCCLASS077 Class &1 is already defined typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is an attempt to create or define a class that already exists in the system. This can happen during the configuration of classes for various planning functions, such as demand planning or supply network planning.
  Cause:
  
  Duplicate Class Definition: The most common cause of this error is that a class with the same name or identifier already exists in the system.
  Incorrect Configuration: There may be an attempt to redefine or reconfigure a class that has already been set up.
  Transport Issues: If you are transporting configuration from one system to another, there may be conflicts if the class already exists in the target system.
  
  Solution:
  
  
  Check Existing Classes: 
  
  Use transaction code /SAPAPO/ABCCLASS or navigate to the relevant configuration area to check if the class with the specified name already exists.
  If it does exist, you may need to modify the existing class instead of creating a new one.
  
  
  
  Rename the New Class: 
  
  If you need to create a new class, consider using a different name or identifier that does not conflict with existing classes.
  
  
  
  Review Transport Requests: 
  
  If the error occurred during a transport, check the transport request to ensure that it does not contain duplicate definitions. You may need to adjust the transport or resolve conflicts.
  
  
  
  Delete or Archive Unused Classes: 
  
  If there are old or unused classes that are no longer needed, consider deleting or archiving them to avoid confusion and potential conflicts.
  
  
  
  Consult Documentation: 
  
  Review SAP documentation or notes related to class definitions in APO for any specific guidelines or best practices.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/ABCCLASS for class management and /SAPAPO/DP for demand planning.
  SAP Notes: Check SAP Notes for any known issues or patches related to class definitions in APO.
  SAP Community: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the error and continue with your configuration in SAP APO.