How To Fix L9501 - Material subject to serial number not possible for external warehouse

SAP Error Message - Details

• Message type: E = Error

• Message class: L9 - Function Modules

• Message number: 501

• Message text: Material subject to serial number not possible for external warehouse

What causes this issue?

It is currently not possible to make postings for materials that
require serial numbers when they are managed in external
<GL:warehouse_number>warehouse numbers</>.

System Response

How to fix this error?

Manage the stock in a storage location that is not managed in an
external warehouse number.

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message L9501 - Material subject to serial number not possible for external warehouse ?

  The SAP error message L9501, which states "Material subject to serial number not possible for external warehouse," typically occurs when you are trying to perform a transaction involving a material that is managed with serial numbers in an external warehouse. This error can arise in various scenarios, such as during goods movements, stock transfers, or inventory management processes.
  Cause:
  
  Serial Number Management: The material in question is set up to require serial number management, but the external warehouse does not support this feature.
  Warehouse Configuration: The external warehouse may not be configured to handle materials that require serial number tracking.
  Material Master Settings: The material master record may have settings that conflict with the external warehouse's capabilities.
  Warehouse Management (WM) Settings: The settings in the Warehouse Management module may not allow for serial number tracking in the external warehouse.
  
  Solution:
  
  
  Check Material Master Settings:
  
  Go to the material master record (transaction code MM03) and check the "General Plant Data/Storage" and "Warehouse Management" views.
  Ensure that the serial number management settings are appropriate for the external warehouse.
  
  
  
  Review Warehouse Configuration:
  
  Check the configuration of the external warehouse in the Warehouse Management module (transaction code SPRO).
  Ensure that the warehouse is set up to handle materials with serial numbers. This may involve adjusting the warehouse settings or creating a new warehouse that supports serial number management.
  
  
  
  Adjust Transaction:
  
  If the transaction you are trying to perform does not require serial number tracking, consider using a different material or adjusting the transaction to bypass the serial number requirement.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or consult with your SAP support team to understand the specific configurations required for handling serial numbers in external warehouses.
  
  
  
  Testing:
  
  After making any changes, perform a test transaction to ensure that the error no longer occurs.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM03 (Material Master), LT01 (Transfer Order), and LX01 (Inventory Management).
  User Roles and Authorizations: Ensure that the user performing the transaction has the necessary authorizations to manage materials with serial numbers in the external warehouse.
  
  If the issue persists after following these steps, it may be beneficial to engage with your SAP support team or consult with an SAP expert for further assistance.