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

OO770 - Overview

• 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.

OO770 - Details

• 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,