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

/SCWM/TW_UI042 - Overview

• 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

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/SCWM/TW_UI042 - Details

• 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