Our client has ECC.6 EHP 7
We want to revers inbound delivery with VL09
we do not use WM management
scenario: at first we create inbound delivery from PO and create Handling Unit Number in it.
after we GR inbound delivery and than assign HU to another outbound delivery.
before GI outbound delivery we Unassigned HU from outbound delivery and than when we revers inbound delivery with VL09 System take error " Hadling Units Have been Changed. No Cancellation Possible Message No. HUDIALOG304
Please Guide me how can cancel GR?