How To Fix OO770 - The method/function '&' does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 770

• Message text: The method/function '&' does not exist

What causes this issue?

No appropriate definition-part exists pointing to this method/function.

System Response

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

How to fix this error?

Check if the missing definition should be restored within a section or a
clean-up action is required.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OO770 - The method/function '&' does not exist ?

  The SAP error message OO770, which states "The method/function '&' does not exist," typically occurs in ABAP programming when the system cannot find a method or function that is being called in the code. This can happen for several reasons, and here are some common causes, solutions, and related information:
  Causes:
  
  Typographical Error: The method or function name may be misspelled in the code.
  Method Not Defined: The method may not be defined in the class or interface being referenced.
  Visibility Issues: The method may be private or protected, and the calling code does not have access to it.
  Incorrect Class/Interface: The method may belong to a different class or interface than the one being referenced.
  Missing Implementation: If the method is declared in an interface or abstract class, it may not have been implemented in the concrete class.
  Version Mismatch: If the code is referencing a method from a different version of a class or library, it may not exist in the current version.
  
  Solutions:
  
  Check Spelling: Verify that the method or function name is spelled correctly in the code.
  Verify Method Definition: Ensure that the method is defined in the class or interface you are trying to call it from. You can do this by checking the class/interface definition in the ABAP Workbench (SE80 or SE24).
  Check Access Modifiers: If the method is private or protected, ensure that the calling code is within the appropriate scope to access it.
  Correct Class/Interface Reference: Make sure you are referencing the correct class or interface that contains the method.
  Implement Missing Methods: If the method is declared in an interface or abstract class, ensure that it is implemented in the concrete class.
  Check for Version Changes: If you are working with a library or framework, check if there have been any changes in the method signatures or availability in the latest version.
  
  Related Information:
  
  ABAP Workbench (SE80): Use this tool to navigate through classes and interfaces to find method definitions.
  Class Builder (SE24): This transaction allows you to view and edit class definitions, including methods.
  Debugging: Use the debugger to step through the code and identify where the error occurs.
  Documentation: Refer to SAP documentation or the ABAP keyword documentation for more details on the specific method or function you are trying to use.
  
  By following these steps, you should be able to identify and resolve the cause of the OO770 error in your SAP ABAP code.