How To Fix WTADDI428 - Class type &1 and class &2 cannot be exploded

WTADDI428 - Overview

• Message type: E = Error

• Message class: WTADDI - Additionals: Messages

• Message number: 428

• Message text: Class type &1 and class &2 cannot be exploded

What causes this issue?

You wish to specify plants or customers using class &V2&. The system is
unable to explode this class, however, as there are no plants or
customers assigned to it.

How to fix this error?

Check whether class &V2& really does belong to class type &V1&; if not,
correct your entries.

Error message extract from SAP system. Copyright SAP SE.

WTADDI428 - Details

• Certainly! Here's a detailed explanation for the SAP error message WTADDI428: Class type &1 and class &2 cannot be exploded:
  
  Error Message
  WTADDI428: Class type &1 and class &2 cannot be exploded
  
  Cause
  This error occurs during the explosion of a class in SAP, typically in the context of Work Breakdown Structure (WBS) or Class-based BOM (Bill of Materials) processing. The system tries to explode (break down) a class into its components or sub-classes, but it encounters two class types that are incompatible for explosion.
  
  Class explosion means breaking down a class into its components or sub-classes.
  The error indicates that the system cannot explode a class of type &1 together with a class of type &2.
  This usually happens because the class types involved are not designed to be exploded together or the system does not support explosion for one or both class types.
  
  Common scenarios:
  
  Trying to explode a material class together with a document class or