How To Fix WTADDI419 - No class type entered

WTADDI419 - Overview

• Message type: E = Error

• Message class: WTADDI - Additionals: Messages

• Message number: 419

• Message text: No class type entered

What causes this issue?

You are attempting to display <GL:class>classes</>. The system tried to
perform a search for classes by class type, but you have not entered a
class type.

How to fix this error?

Enter a class type.

Error message extract from SAP system. Copyright SAP SE.

WTADDI419 - Details

• Certainly! Here's a detailed explanation for the SAP error message WTADDI419 - No class type entered:
  
  Error Message
  WTADDI419: No class type entered
  
  Cause
  This error occurs in SAP when you are trying to create or assign a class in the Classification System (transaction codes like CL02, CL20N, or during object classification) but have not specified the Class Type. The Class Type is a mandatory field that defines the category or nature of the class you want to create or use.
  In other words, the system expects you to enter a valid class type (such as 001 for Material Classes, 032 for Document Classes, etc.), but this field was left blank or the input was invalid.
  
  When does it typically occur?
  
  When creating a new class without specifying the class type.
  When assigning a class to an object but the class type is missing.
  During classification of objects where the class type is required.
  In custom developments or interfaces where