Diagnosis
You want to:

• Change the reference of a handling unit


• Include a handling unit in an already existing delivery


• Deliver HUs (create a delivery based on handling units)


• Delete a handling unit

However, you have not selected any handling units.

Procedure
Select at least one handling unit, and


• Choose Edit -> Change Reference


• Select the delivery that is to be assigned to this handling unit


• Choose Deliver HUs


• Then choose Delete HUs