I configured custom routes in warehouse with 2 validation steps (E.g : WH/Stock => WH/Tank1 and WH/Tank1 => Partner location/Customers). But when i process with the sale order and try to do a partial shipping (e.g : initial order => 10L; Partial shipping => 5L) no backorder is created to allow me to ship the remaining 5L in WH/Tank1.
Can you help me with this?