1) Open the order to be unallocated.
2) Uncheck 'Send to Warehouse' if checked.
a) Uncheck the 'Send to Warehouse' field.
b) Click 'Save'.
3) Open the Fulfilment Workbench
4) Unallocate all allocation records.
a) Select all allocation rows.
b) Click Unallocate and Unreserve.
