Hi Karthik,
Thank you for reply. The 1st option would be perfect for my team. I am at home now and I can't check it yet but if I good understood:
1. I go to Maintain Transportation Unit and type my incorrect trailer.
2. I go to bottom window and press tab called HU.
3. I remove all assigned HUs from there.
4. I go to Maintain Transportation Unit and type my correct trailer.
5. I go to bottom window and press tab called free HU (unfortunately I don't remember this tab but I will check at work)
6. I search my HUs, highlight them and press ASSIGN (or something to add - i have to check i yet)
The 2nd option if you would be so polite to explain me. I have no experience in working with Outbound documents so i don't want to make to much mess. I understand i go to:
Warehouse Management Monitor → Outbound → Documents → Outbound Delivery Order
thank you
Jacek
EDIT: If I remove assigned HUs and complete unloading it means I have all my HUs back on shipping bank?