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

L9501 - Overview

• 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