How To Fix WJ228 - Class type & and class & cannot be exploded

SAP Error Message - Details

• Message type: E = Error

• Message class: WJ - Additionals

• Message number: 228

• Message text: Class type & and class & 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message WJ228 - Class type & and class & cannot be exploded ?

  Certainly! Here's a detailed explanation for the SAP error message WJ228: Class type & and class & cannot be exploded:
  
  Error Message
  WJ228: Class type & and class & cannot be exploded
  
  Cause
  This error occurs when you try to explode (or expand) a class in SAP's classification system, but the system cannot perform the explosion because:
  
  The class type specified is not allowed to be exploded.
  The class itself is not set up or designed to be exploded.
  The class may be a class type that does not support explosion, such as certain special or system classes.
  The class may be incomplete or missing necessary configuration for explosion.
  The explosion logic is not applicable for the given class type.
  
  In SAP, exploding a class means breaking down the class into its components or related classes, often used in classification, variant configuration, or BOM explosion contexts.
  
  Typical Scenarios
  
  Trying to explode a class of type 001 (Material class) or other types that do not support explosion.
  Attempting to explode a class that is not linked to any characteristic or object that can be exploded.
  Using a transaction or program that expects a class type that supports explosion, but the input class type is different.
  
  
  Solution
  
  
  Check the Class Type:
  
  Verify the class type of the class you are trying to explode.
  Use transaction CL02 or CL03 to display the class and check its type.
  Only certain class types (e.g., type 300 for equipment classes) support explosion.
  
  
  
  Use the Correct Class Type:
  
  If the class type does not support explosion, use a class type that does.
  Adjust your process or program to handle the class type correctly.
  
  
  
  Check Class Configuration:
  
  Ensure the class is properly maintained with characteristics and values.
  Make sure the class is assigned to objects that can be exploded.
  
  
  
  Review the Program or Transaction:
  
  If you are using a custom program or standard SAP transaction, check if it supports the class type.
  Modify the program logic if necessary to handle the class type or prevent explosion attempts on unsupported classes.
  
  
  
  Consult SAP Notes:
  
  Search for SAP Notes related to error WJ228 for any patches or corrections.
  Sometimes, this error can be due to a bug or missing configuration.
  
  
  
  
  Related Information
  
  
  Transactions:
  
  CL02 - Change Class
  CL03 - Display Class
  CL20N - Create/Change Class Characteristic Values
  CS03 - Display BOM (if explosion relates to BOM)
  
  
  
  SAP Modules:
  
  Classification System (LO-CL)
  Variant Configuration (LO-VC)
  Plant Maintenance (PM)
  Materials Management (MM)
  
  
  
  SAP Notes and Documentation:
  
  Check SAP Help Portal for classification and explosion concepts.
  Search SAP Support Portal for notes referencing message WJ228.
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Class type and class do not support explosion.
  
  
  Effect
  System cannot explode the class; error WJ228 raised.
  
  
  Solution
  Verify class type; use supported class types; check class setup; adjust program logic.
  
  
  Tools
  CL02, CL03, CL20N, CS03, SAP Notes.
  
  
  
  
  If you provide the exact context or transaction where this error occurs, I can help with more specific guidance.