Hello Roberto,
To consume Handling Units for a Process Order Or Production Order, you have to:
1.- Create the HUs (if not done already)
2.- Assign the HUs to the Order using COPAWA
3.- Post the goods issue of the HUs assigned to the Order using COWBHUWA (IN COWBHUWA you can change the contents of the HUs before posting the goods issue)
Please mark as correct or helpful if it is.
-Oscar