How To Fix EFH009 - Field &1 will not be changed directly; it might be changed by inheritance

EFH009 - Overview

• Message type: E = Error

• Message class: EFH - Equipment Functional Location Heal

• Message number: 009

• Message text: Field &1 will not be changed directly; it might be changed by inheritance

What causes this issue?

This field will not be changed because its data origin is set to
<LS>Superordinate Equipment</> or <LS>Functional Location</>. However,
the field may be changed due to inheritance if the superior object has
been selected for mass changes.

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?

If you want to change the data origin of the field to <LS>Maintained
Individually</>, open the equipment master data screen and change the
value of the field directly by choosing <LS>Edit </>-> <LS>Data origin
list</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

EFH009 - Details

• The SAP error message EFH009 indicates that you are trying to change a field directly in a context where it is not allowed because the field is subject to inheritance. This typically occurs in scenarios involving object-oriented programming in ABAP, particularly when dealing with class attributes or fields that are inherited from a superclass.
  
  Cause:
  
  Inheritance Mechanism: The field you are trying to modify is inherited from a parent class or interface. In object-oriented programming, certain fields are designed to be read-only in subclasses to maintain encapsulation and integrity of the data.
  Field Attributes: The field may have been defined with specific attributes that prevent direct modification, such as being marked as READ-ONLY or being part of a protected or private section in the parent class.
  
  
  Solution:
  
  Use Setter Methods: Instead of trying to change the field directly, use the appropriate setter method provided by the class. This method is designed to handle changes to