How To Fix O8401 - Transport unit number missing in position & on TU Assignment Screen

SAP Error Message - Details

• Message type: E = Error

• Message class: O8 - IS-Oil: TD Transportation and Distribution

• Message number: 401

• Message text: Transport unit number missing in position & on TU Assignment Screen

What causes this issue?

The transport unit number is missing on the TU Assignment Screen.

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?

Either enter a transport unit number next to all sequence numbers, or
delete the unnecessary entries.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message O8401 - Transport unit number missing in position & on TU Assignment Screen ?

  The SAP error message O8401, which states "Transport unit number missing in position & on TU Assignment Screen," typically occurs in the context of handling transportation units (TUs) in the SAP Extended Warehouse Management (EWM) module. This error indicates that the system expects a transport unit number to be present in a specific position, but it is missing.
  Cause:
  
  Missing Transport Unit Number: The most straightforward cause is that the transport unit number has not been assigned or entered in the system.
  Incorrect Configuration: There may be configuration issues in the EWM settings that prevent the transport unit from being recognized.
  Data Entry Error: Users may have inadvertently skipped entering the transport unit number or made a mistake during data entry.
  System Bugs or Inconsistencies: Occasionally, bugs or inconsistencies in the system can lead to this error.
  
  Solution:
  
  
  Check Transport Unit Assignment:
  
  Navigate to the TU Assignment Screen and verify if the transport unit number is indeed missing.
  If it is missing, enter the correct transport unit number in the designated field.
  
  
  
  Review Configuration:
  
  Check the configuration settings in EWM related to transport units. Ensure that all necessary settings are correctly configured to allow for proper transport unit handling.
  
  
  
  Data Entry Verification:
  
  Ensure that all required fields are filled out correctly. Double-check for any typos or omissions in the transport unit number.
  
  
  
  System Logs and Messages:
  
  Review system logs for any additional error messages or warnings that may provide more context about the issue.
  If the error persists, consider checking for any recent changes in the system that might have affected transport unit processing.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on handling transport units and resolving related errors.
  
  
  
  Contact SAP Support:
  
  If the issue cannot be resolved through the above steps, consider reaching out to SAP support for assistance. Provide them with the error message details and any relevant context to facilitate troubleshooting.
  
  
  
  Related Information:
  
  SAP EWM Documentation: Familiarize yourself with the SAP EWM documentation for detailed information on transport units and their management.
  Transaction Codes: Use relevant transaction codes (like /SCWM/TU or /SCWM/TO) to navigate to transport unit and transfer order management screens.
  User Training: Ensure that users are adequately trained in the processes related to transport units to minimize data entry errors.
  
  By following these steps, you should be able to identify the cause of the O8401 error and implement a solution to resolve it.