How To Fix WM434 - Module number & is not an admissible external number

WM434 - Overview

• Message type: E = Error

• Message class: WM - IS-R Assortments

• Message number: 434

• Message text: Module number & is not an admissible external number

What causes this issue?

This number does not fall within the number intervals that have been
defined.

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?

Enter an allowed number or change the number intervals (transaction
WSN1).

Error message extract from SAP system. Copyright SAP SE.

WM434 - Details

• The SAP error message WM434, which states "Module number & is not an admissible external number," typically occurs in the Warehouse Management (WM) module when there is an issue with the external number assignment for a warehouse module. This error can arise due to several reasons, and here are some common causes, solutions, and related information:
  Causes:
  
  Invalid Module Number: The module number you are trying to use may not be defined in the system or may not be valid for the specific warehouse.
  
  Configuration Issues: The configuration settings for the warehouse management module may not be set up correctly, leading to the system not recognizing the module number.
  Number Range Issues: The number range for the module numbers may not be properly defined or may have been exhausted.
  Authorization Issues: The user may not have the necessary authorizations to access or use the specified module number.
  
  Solutions:
  
  Check Module Number: Verify that the module number you