How To Fix CL671 - Enter at least one letter in the name of your class type

CL671 - Overview

• Message type: E = Error

• Message class: CL - Classification

• Message number: 671

• Message text: Enter at least one letter in the name of your class type

What causes this issue?

Class types that are created by customers must have at least one letter
in their name. Class types whose names contain only figures can only be
create in SAP's own systems with a special authorization.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CL671 - Enter at least one letter in the name of your class type ?

  The SAP error message CL671, which states "Enter at least one letter in the name of your class type," typically occurs when you are trying to create or modify a class in the ABAP Workbench (transaction SE24) and you have not provided a valid name for the class type. This error is a validation check to ensure that the class name is not empty and meets the naming conventions required by SAP.
  
  Cause:
  
  Empty Class Name: You may have attempted to create a class without entering any name.
  Invalid Input: The input provided does not meet the naming conventions (e.g., it may contain invalid characters or be too short).
  User Interface Issue: Sometimes, the user interface may not have registered the input correctly due to a glitch.
  
  
  Solution:
  
  
  Enter a Valid Class Name: Ensure that you enter a valid name for your class. The name should:
  
  Start with a letter (A-Z or a-z).
  Be followed by letters, numbers