How To Fix OO712 - Method &1 already exists in interface &2

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 712

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

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OO712 - Method &1 already exists in interface &2 ?

  The SAP error message OO712 ("Method &1 already exists in interface &2") typically occurs when you are trying to define a method in an interface that already has a method with the same name. This can happen during the creation or modification of an interface in the ABAP Workbench.
  Cause:
  
  Duplicate Method Definition: The primary cause of this error is that the method you are trying to add to the interface already exists in that interface. This can happen if:
  
  You are trying to add a method with the same name and signature.
  You have copied an interface or method and did not change the name.
  
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Methods: 
  
  Open the interface in the ABAP Workbench (transaction SE80 or SE11).
  Review the list of methods defined in the interface to see if the method you are trying to add already exists.
  
  
  
  Rename the Method: 
  
  If the method already exists and you need to add a new method, consider renaming the new method to avoid the conflict.
  
  
  
  Modify Existing Method: 
  
  If you intended to modify the existing method, you can do so instead of trying to create a new one.
  
  
  
  Check for Inheritance: 
  
  If the interface is being inherited by other interfaces or classes, ensure that the method is not being defined in a parent interface or class.
  
  
  
  Documentation: 
  
  Ensure that you have proper documentation for the methods in the interface to avoid confusion in the future.
  
  
  
  Related Information:
  
  Interface Definition: In ABAP, an interface is a collection of method definitions that can be implemented by classes. Each method must have a unique name within the interface.
  Method Signature: The method signature includes the method name and its parameters. If the signature matches an existing method, it will lead to this error.
  ABAP Workbench Transactions: Common transactions for working with interfaces include SE80 (Object Navigator), SE11 (Data Dictionary), and SE24 (Class Builder).
  
  By following these steps, you should be able to resolve the OO712 error and successfully manage your interface methods in SAP.