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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message WN155 - Area schema & not assigned to layout & ?

  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 Execution or Warehouse Management).
  Verify that the area schema is correctly assigned to the relevant layout.
  
  
  
  Assign Area Schema:
  
  If the area schema is not assigned, you will need to assign it to the layout.
  Use transaction code SPRO to access the configuration menu.
  Follow the path: Logistics Execution -> Warehouse Management -> Define Warehouse Layout -> Assign Area Schema to Layout.
  Make the necessary assignments and save your changes.
  
  
  
  Check for Data Consistency:
  
  Ensure that all related master data is consistent and correctly configured.
  Check for any recent changes that might have affected the configuration.
  
  
  
  Testing:
  
  After making the necessary changes, perform a test to ensure that the error no longer occurs.
  Try to execute the transaction or process that previously triggered the error.
  
  
  
  Consult Documentation:
  
  If the issue persists, consult SAP documentation or help resources for further guidance on area schemas and layouts.
  
  
  
  Contact Support:
  
  If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert for assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SPRO for configuration and LX01 for warehouse management.
  SAP Notes: Check SAP Notes for any known issues or patches related to the WN155 error.
  Training: Consider training or resources on SAP Warehouse Management to better understand the configuration and management of layouts and area schemas.
  
  By following these steps, you should be able to resolve the WN155 error and ensure that your area schema is properly assigned to the layout in your SAP system.