l10n.in.ewaybill.stock.form.inherit l10n.in.ewaybill state not in ['generated', 'challan'] state == 'challan' picking_id and supply_type == 'I' [ ('allowed_supply_type', 'in', (supply_type == 'I' and 'in' or 'out', 'both')), ('code', '!=', 'CHL') ] if not picking_id else [ ('allowed_supply_type', 'in', (supply_type == 'I' and 'in' or 'out', 'both')), ('code', '=', 'CHL') ]