How To Fix OO719 - Type &1 already exists in interface &2

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 719

• Message text: Type &1 already exists in interface &2

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 OO719 - Type &1 already exists in interface &2 ?

  The SAP error message OO719, which states "Type &1 already exists in interface &2," typically occurs when there is an attempt to define a type (such as a structure, data element, or any other type) that has already been defined in the specified interface. This can happen during the development of ABAP programs, especially when working with interfaces, classes, or data dictionary objects.
  Cause:
  
  
  Duplicate Type Definition: The most common cause of this error is that the type you are trying to define already exists in the interface you are working with. This can happen if:
  
  You are trying to redefine a type that has already been declared in the interface.
  There is a naming conflict due to similar names in the same namespace.
  
  
  
  Inconsistent Object State: Sometimes, the error can arise from inconsistencies in the object state, especially if there have been recent changes or transports that have not been properly activated.
  
  
  Solution:
  
  
  Check Existing Definitions: 
  
  Go to the interface specified in the error message and check the existing types. Ensure that the type you are trying to define does not already exist.
  If it does exist, consider using the existing type instead of creating a new one.
  
  
  
  Rename the Type: 
  
  If you need to create a new type, consider renaming it to avoid the conflict with the existing type.
  
  
  
  Activate Objects: 
  
  Ensure that all related objects (interfaces, classes, etc.) are activated. Sometimes, activation issues can lead to misleading error messages.
  
  
  
  Clear Buffer: 
  
  If you suspect that the error is due to a caching issue, you can try clearing the buffer. This can be done using transaction code /n/SAPAPO/OM17 or by using the transaction SE11 to activate the data dictionary objects.
  
  
  
  Check Transport Requests: 
  
  If the error occurred after a transport, ensure that all related objects were transported correctly and are in sync.
  
  
  
  Consult Documentation: 
  
  If you are working with standard SAP interfaces or types, consult the SAP documentation or notes for any known issues or updates related to the specific interface.
  
  
  
  Related Information:
  
  ABAP Development: Understanding how to manage types and interfaces in ABAP is crucial. Familiarize yourself with the ABAP Dictionary and the Object-Oriented programming concepts in ABAP.
  SAP Notes: Check SAP Notes for any specific issues related to the error message OO719. SAP frequently updates its knowledge base with solutions to common problems.
  Community Forums: Consider searching or posting on SAP community forums (like SAP Community or Stack Overflow) for additional insights from other developers who may have encountered the same issue.
  
  By following these steps, you should be able to resolve the OO719 error and continue with your development work in SAP.