How To Fix W0028 - Wrong plant class type

SAP Error Message - Details

• Message type: E = Error

• Message class: W0 - Customizing - ISR

• Message number: 028

• Message text: Wrong plant class type

What causes this issue?

You maintained a plant class type that is not allowed under
application A.

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 W0028 - Wrong plant class type ?

  Certainly! Here's a detailed explanation for the SAP error message W0028 - Wrong plant class type:
  
  SAP Error Message: W0028 - Wrong plant class type
  
  Cause:
  The error W0028 - Wrong plant class type typically occurs when there is a mismatch or inconsistency in the classification of a plant in SAP. Specifically, the plant is assigned a class type that is not appropriate or expected for the operation or transaction being performed.
  In SAP, plants can be classified by different class types (e.g., for material management, production, or other purposes). If the system expects a certain class type for the plant but finds a different one, it raises this warning/error.
  Common scenarios causing this error include:
  
  The plant master data has an incorrect or inconsistent class type assigned.
  The transaction or process requires a plant of a specific class type, but the plant used does not meet this requirement.
  Customizing or configuration settings expect a certain plant classification that is not met.
  Integration issues where plant classification is checked against other modules or processes.
  
  
  Solution:
  To resolve the W0028 - Wrong plant class type error, follow these steps:
  
  
  Check Plant Master Data:
  
  Go to transaction OX10 (or relevant plant maintenance transaction).
  Verify the plant classification and ensure it matches the expected class type for the process.
  Correct the plant class type if it is incorrect.
  
  
  
  Review Class Type Assignment:
  
  Use transaction CL02 or CL20N to check the class and classification assigned to the plant.
  Confirm that the class type assigned to the plant is appropriate for the business process.
  
  
  
  Check Configuration:
  
  Review the customizing settings related to plant classification.
  For example, in IMG under Enterprise Structure ? Definition ? Logistics General ? Define Plant, verify the plant settings.
  Also check any specific settings in modules like MM, PP, or WM that might restrict plant class types.
  
  
  
  Adjust Process or Transaction:
  
  If the process requires a plant of a certain class type, ensure you select the correct plant.
  Alternatively, adjust the process requirements if the plant classification is correct but the process is too restrictive.
  
  
  
  Consult Documentation or SAP Notes:
  
  Search for SAP Notes related to W0028 for any known issues or patches.
  Review SAP Help Portal or module-specific documentation for plant classification requirements.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  OX10 – Maintain Plants
  CL02 – Change Class
  CL20N – Classification Overview
  SPRO – Customizing (for configuration checks)
  
  
  
  Modules Involved:
  
  Logistics General (Enterprise Structure)
  Materials Management (MM)
  Production Planning (PP)
  Warehouse Management (WM)
  
  
  
  SAP Notes:
  
  Check SAP Service Marketplace or SAP ONE Support Launchpad for notes referencing message W0028.
  
  
  
  Additional Tips:
  
  Ensure consistency in master data across modules.
  Validate plant classification during master data creation or changes.
  Coordinate with functional consultants if plant classification impacts multiple modules.
  
  
  
  
  If you provide the exact transaction or scenario where this error occurs, I can help tailor the solution more specifically.