mts_mto_base_automation.py

qty_available = env['stock.quant']._get_available_quantity(record.product_id, record.location_id)

if qty_available:
  qty_needed = record.product_uom._compute_quantity(record.product_uom_qty, record.product_id.uom_id)
  real_qty = record.product_id.uom_id._compute_quantity(qty_available, record.product_uom)
  if qty_needed > qty_available:
    new_move = record.copy({'ordered_qty': real_qty, 'product_uom_qty': real_qty, 'state': 'confirmed', 'procure_method': 'make_to_stock', 'created_purchase_line_id': False, 'picking_id': record.picking_id.id})
    #raise Warning('%s' % record.picking_id.name)
    remaining = record.product_uom_qty - real_qty
    record.write({'ordered_qty': remaining, 'product_uom_qty': remaining})
    new_move._action_assign()
    line = record.created_purchase_line_id
    line.write({'product_qty': line.product_qty - real_qty})
  else:
    line = record.created_purchase_line_id
    line.write({'product_qty': line.product_qty - record.product_uom_qty})
    record.write({'state': 'confirmed', 'created_purchase_line_id': False, 'procure_method': 'make_to_stock'})
    record._action_assign()