<form string="Purchase Order Line">
<notebook colspan="4">
<page string="Order Line">
- <field name="product_id" colspan="4" context="{'partner_id':parent.partner_id, 'quantity':product_qty, 'pricelist':parent.pricelist_id, 'uom':product_uom, 'warehouse':parent.warehouse_id}" on_change="product_id_change(parent.pricelist_id,product_id,product_qty,product_uom,parent.partner_id, parent.date_order,parent.fiscal_position,date_planned,name,price_unit,notes,context)"/>
+ <field name="product_id" colspan="4" context="{'partner_id':parent.partner_id, 'quantity':product_qty, 'pricelist':parent.pricelist_id, 'uom':product_uom, 'warehouse':parent.warehouse_id}" on_change="product_id_change(parent.pricelist_id,product_id,product_qty,product_uom,parent.partner_id, parent.date_order,parent.fiscal_position,date_planned,name,price_unit,notes,context)" required="1"/>
<field name="product_qty" context="{'partner_id':parent.partner_id, 'quantity':product_qty, 'pricelist':parent.pricelist_id, 'uom':product_uom, 'warehouse':parent.warehouse_id}" on_change="product_id_change(parent.pricelist_id,product_id,product_qty,product_uom,parent.partner_id,parent.date_order,parent.fiscal_position,date_planned,name,price_unit,notes,context)"/>
<field name="product_uom" on_change="product_uom_change(parent.pricelist_id,product_id,product_qty,product_uom,parent.partner_id, parent.date_order,parent.fiscal_position,date_planned,name,price_unit,notes)"/>
<field colspan="4" name="name"/>