How To Fix CL669 - Class type &1 requires additional objects

CL669 - Overview

• Message type: E = Error

• Message class: CL - Classification

• Message number: 669

• Message text: Class type &1 requires additional objects

What causes this issue?

Class type &V1& has the <ZH>Multiple objs allowed</> indicator, so you
must enter at least one object table for the class type under
<ZH>Objects</>.

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?

Either enter objects for the class type or deselect the indicator.

Error message extract from SAP system. Copyright SAP SE.

CL669 - Details

• The SAP error message CL669, which states "Class type &1 requires additional objects," typically occurs when you are trying to create or modify a class in the ABAP Object-Oriented programming environment, and the class type you are working with requires additional components or objects that have not been defined or are missing.
  
  Cause:
  
  Incomplete Class Definition: The class type you are trying to create (e.g., a subclass or an interface) may require additional components such as methods, attributes, or interfaces that have not been defined.
  Inheritance Issues: If the class is intended to inherit from a parent class, the parent class may not be fully defined or may be missing required methods or attributes.
  Abstract Classes: If you are trying to implement an abstract class, you must provide implementations for all abstract methods defined in that class.
  Interface Implementation: If the class is supposed to implement an interface, all methods defined in the interface must