How To Fix WN156 - Layout already maintained for department &

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 156

• Message text: Layout already maintained for department &

What causes this issue?

Layout data can either only be maintained on plant level or only
on department level.

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?

If you want to maintain the layout data on plant level, you need
to delete the layout data on department level.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WN156 - Layout already maintained for department & ?

  The SAP error message WN156 ("Layout already maintained for department &") typically occurs in the context of SAP's Warehouse Management (WM) or Inventory Management (IM) modules. This error indicates that a layout (which could refer to a storage layout or a physical layout of the warehouse) has already been defined for the specified department or storage area.
  Cause:
  
  Duplicate Layout Entry: The error is triggered when there is an attempt to create or modify a layout for a department that already has an existing layout defined.
  Configuration Issues: There may be a misconfiguration in the system where the same layout is being referenced multiple times.
  Data Integrity: The system may have integrity checks that prevent the same layout from being assigned to a department more than once.
  
  Solution:
  
  
  Check Existing Layouts: 
  
  Navigate to the relevant transaction (e.g., LS01N for creating storage locations or LS02N for changing them) and check if a layout already exists for the specified department.
  If a layout is already defined, you may need to modify or delete the existing layout instead of trying to create a new one.
  
  
  
  Modify Existing Layout:
  
  If you need to change the layout, use the appropriate transaction to modify the existing layout rather than creating a new one.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation or configuration guides related to warehouse layouts to ensure you are following the correct procedures.
  
  
  
  Authorization Check:
  
  Ensure that you have the necessary authorizations to view or modify layouts in the system.
  
  
  
  Contact Support:
  
  If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert who can provide further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as LS01N, LS02N, and LS03N for managing storage layouts.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Configuration Settings: Review the configuration settings in the IMG (Implementation Guide) under the Warehouse Management section to ensure that layouts are set up correctly.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.