How To Fix WN155 - Area schema & not assigned to layout &

WN155 - Overview

• Message type: E = Error

• Message class: WN - Plant master data maintenance (integrated)

• Message number: 155

• Message text: Area schema & not assigned to layout &

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Check your entry.
If necessary, complete the required assignment.
<ds:TRAN.WOL1>Proceed</>

Error message extract from SAP system. Copyright SAP SE.

WN155 - Details

• The SAP error message WN155 indicates that an area schema is not assigned to a layout in the context of the SAP system, particularly in the area of warehouse management or inventory management. This error typically arises when there is a mismatch or misconfiguration in the settings related to warehouse layouts and area schemas.
  
  Cause:
  
  Missing Assignment: The area schema has not been assigned to the layout in the configuration settings.
  Incorrect Configuration: The configuration for the warehouse layout or area schema may be incorrect or incomplete.
  Changes in Configuration: Recent changes in the warehouse management settings may have led to the area schema being unassigned.
  Data Inconsistency: There may be inconsistencies in the master data related to the warehouse layout or area schema.
  
  
  Solution:
  To resolve the WN155 error, follow these steps:
  
  
  Check Area Schema Assignment:
  
  Go to the configuration settings in SAP.
  Navigate to the area where you can manage warehouse layouts and area schemas (usually under Logistics