How To Fix /SCWM/TW_UI042 - Not all planned HUs have a TU assignment; select a single TU first

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/TW_UI -

• Message number: 042

• Message text: Not all planned HUs have a TU assignment; select a single TU first

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/TW_UI042 - Not all planned HUs have a TU assignment; select a single TU first ?

  The SAP error message /SCWM/TW_UI042 Not all planned HUs have a TU assignment; select a single TU first typically occurs in the context of the SAP Extended Warehouse Management (EWM) module, particularly when dealing with handling units (HUs) and transportation units (TUs). This error indicates that the system is expecting a single transportation unit to be selected, but there are planned handling units that do not have an assignment to a transportation unit.
  Cause:
  
  Multiple Handling Units: The error arises when you have multiple planned handling units (HUs) that are not assigned to a single transportation unit (TU). The system requires that you select one TU to proceed with the operation.
  Incomplete Assignments: There may be planned HUs that have not been assigned to any TU, leading to this error when trying to perform actions that require a TU.
  User Action: The user may have attempted to process or confirm an operation without selecting a specific TU first.
  
  Solution:
  
  Select a Single TU: Before proceeding with the operation, ensure that you select a single transportation unit that you want to work with. This can usually be done in the user interface where you are managing the HUs and TUs.
  Check HU Assignments: Review the planned handling units and their assignments to TUs. You can do this by navigating to the relevant transaction or screen in SAP EWM where you can view the handling units and their statuses.
  Assign HUs to TU: If there are planned HUs that are not assigned to any TU, you may need to assign them to a TU. This can typically be done through the appropriate transaction or function in SAP EWM.
  Review Configuration: If this issue occurs frequently, it may be worth reviewing the configuration settings related to handling units and transportation units in your SAP EWM system to ensure they are set up correctly.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP EWM, such as /SCWM/PRDI for processing inbound deliveries or /SCWM/PRDI for managing handling units.
  Documentation: Refer to SAP Help documentation for Extended Warehouse Management for detailed guidance on handling units and transportation units.
  User Training: Ensure that users are trained on the correct processes for handling units and transportation units to minimize errors.
  
  By following these steps, you should be able to resolve the error and continue with your operations in SAP EWM. If the problem persists, consider reaching out to your SAP support team for further assistance.