How To Fix L3211 - External assignment of storage unit numbers is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: L3 -

• Message number: 211

• Message text: External assignment of storage unit numbers is not allowed

What causes this issue?

You manually entered a <GL:storage_unit>storage unit</> number that
does not yet exist and would normally be created at this time. The
number you entered lies outside the number range interval that is
assigned to your warehouse. This number cannot be issued for your
warehouse number.

How to fix this error?

Check to see that the storage unit number you entered is correct.
Further information
<DS:SIMG.SIMG_XXMENUOLML34>Define number ranges</>

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message L3211 - External assignment of storage unit numbers is not allowed ?

  The SAP error message L3211, which states "External assignment of storage unit numbers is not allowed," typically occurs in the context of warehouse management processes. This error indicates that there is an attempt to manually assign a storage unit number (SUN) to a storage unit in a way that is not permitted by the system's configuration or business rules.
  Causes:
  
  Configuration Settings: The system may be configured to prevent external assignment of storage unit numbers. This is often the case in environments where storage unit management is tightly controlled.
  Warehouse Management Settings: The warehouse management settings may not allow for manual assignment of storage unit numbers, especially if the system is set to automatically generate these numbers.
  Incorrect Process: The user may be attempting to perform an operation that is not allowed, such as trying to assign a storage unit number during a process that does not support it (e.g., during a transfer or movement that requires automatic handling).
  User Authorizations: The user may lack the necessary authorizations to perform the action they are attempting.
  
  Solutions:
  
  Check Configuration: Review the warehouse management configuration settings to ensure that external assignment of storage unit numbers is allowed if that is the desired behavior. This may involve checking the settings in the Warehouse Management (WM) module.
  Use Automatic Assignment: If the system is configured to automatically assign storage unit numbers, ensure that you are following the correct process to allow the system to handle this automatically.
  Review Process Steps: Ensure that you are following the correct steps in the process. If you are trying to assign a storage unit number during a process that does not allow it, consider revising your approach.
  User Permissions: Check the user roles and permissions to ensure that the user has the necessary authorizations to perform the action.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the warehouse management processes and configurations related to storage unit management.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP WM, such as LT01 (Create Transfer Order), LT10 (Transfer Order Confirmation), and others that may be relevant to your process.
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide additional insights or patches that address known issues.
  Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert who specializes in warehouse management for further assistance.
  
  By addressing the configuration, process, and authorization aspects, you should be able to resolve the L3211 error effectively.