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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CL669 - Class type &1 requires additional objects ?

  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 be implemented in the class.
  
  Solution:
  
  Check Class Definition: Review the class definition to ensure that all required components (methods, attributes, etc.) are defined. If you are inheriting from a parent class, ensure that the parent class is fully defined.
  Implement Missing Methods: If the class is abstract or implements an interface, make sure to implement all required methods.
  Add Required Objects: If the class type requires additional objects (like interfaces or other classes), ensure that these are created and properly linked.
  Use Transaction SE24: You can use transaction SE24 (Class Builder) to check the class definition and see what additional objects are required.
  Check Documentation: Review the SAP documentation or help files related to class types and their requirements for more detailed guidance.
  
  Related Information:
  
  Class Types: In SAP, there are different class types such as local classes, global classes, abstract classes, and interfaces. Each has specific requirements and rules.
  ABAP Object-Oriented Programming: Understanding the principles of ABAP OO programming can help in resolving issues related to class definitions and implementations.
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message, as there may be specific patches or updates that address this issue.
  
  If you continue to experience issues after following these steps, consider reaching out to your SAP support team or consulting with an experienced ABAP developer for further assistance.