How To Fix AC688 - Base method &1 is not defined

AC688 - Overview

• Message type: E = Error

• Message class: AC - Error messages from Asset Customizing

• Message number: 688

• Message text: Base method &1 is not defined

What causes this issue?

Base method &V1& is not defined.

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?

Define base method &V1& in FI-AA Customizing under
<DS:TRAN.AFAMR>Maintain Base Methods</>.

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 AC688 - Base method &1 is not defined ?

  The SAP error message AC688, which states "Base method &1 is not defined," typically occurs in the context of ABAP programming, particularly when dealing with class-based programming and inheritance. This error indicates that the system is trying to call a method that is expected to be defined in a base class, but it cannot find it.
  Causes:
  
  Missing Method Definition: The method that is being called is not defined in the base class or any of its superclasses.
  Typographical Error: There may be a typo in the method name when it is being called.
  Incorrect Class Hierarchy: The class from which the method is being called may not be correctly inheriting from the base class that contains the method.
  Visibility Issues: The method may be defined but is not accessible due to visibility restrictions (e.g., it is declared as private in the base class).
  Changes in Class Definition: If the base class was modified (e.g., the