How To Fix /SCWM/DELIVERY252 - HU &1 is not a top HU; action is only possible for top HUs

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/DELIVERY -

• Message number: 252

• Message text: HU &1 is not a top HU; action is only possible for top HUs

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/DELIVERY252 - HU &1 is not a top HU; action is only possible for top HUs ?

  The SAP error message /SCWM/DELIVERY252 indicates that the handling unit (HU) you are trying to process is not a top-level handling unit. In SAP Extended Warehouse Management (EWM), handling units can be nested, meaning that a handling unit can contain other handling units. However, certain actions can only be performed on top-level handling units.
  Cause:
  
  Nested Handling Units: The handling unit you are trying to work with is a child handling unit (not a top-level HU). This means it is contained within another handling unit.
  Incorrect Action: The action you are attempting to perform (e.g., picking, shipping, etc.) is restricted to top-level handling units only.
  
  Solution:
  
  Identify the Top-Level HU: You need to find the top-level handling unit that contains the HU you are trying to process. You can do this by checking the hierarchy of handling units in the system.
  Perform Action on Top-Level HU: Once you have identified the top-level HU, perform the desired action on that HU instead of the nested one.
  Use Transaction Codes: You can use transaction codes like /SCWM/HU to display handling units and their hierarchy, or /SCWM/PR for picking requests, to find the relevant top-level HU.
  Check HU Structure: If you need to change the structure of handling units, you may need to repackage or reorganize the handling units to ensure that the desired HU is at the top level.
  
  Related Information:
  
  Handling Unit Management: Understanding how handling units are structured in SAP EWM is crucial. Familiarize yourself with the concepts of top-level and nested handling units.
  Documentation: Refer to SAP Help documentation for Extended Warehouse Management for detailed information on handling units and their management.
  User Training: Ensure that users are trained on how to manage handling units effectively to avoid such errors in the future.
  
  By following these steps, you should be able to resolve the error and perform the necessary actions on the appropriate handling units.