you can try this way:
class InheritSaleOrderLine(models.Model):

_inherit = 'sale.order.line'

product_dimension = fields.Char(string="Dimension")

def _prepare_procurement_values(self, group_id=False):

res = super(InheritSaleOrderLine, self)._prepare_procurement_values(group_id)

res.update({'product_dimension': self.product_dimension})

return res

class StockRuleInherit(models.Model):

_inherit = 'stock.rule'

def _get_stock_move_values(self, product_id, product_qty, product_uom, location_id, name, origin, values, group_id):

res = super(StockRuleInherit, self)._get_stock_move_values(product_id, product_qty, product_uom, location_id,

name, origin, values, group_id)

res['product_dimension'] = values.get('product_dimension', False)

return res

make sure that the values parameter passed to the _get_stock_move_values method is a dictionary containing the required information. Additionally, ensure that you are passing the correct arguments when calling the _prepare_procurement_values method to set the product_dimension field value.

Hi,

You cannot use the get method on values because it is an instance of the res.company object and not a dictionary, which is why you are getting the problem. Field values from the stock.move records are contained in the values parameter. You must use dot notation to directly retrieve the value of the product_dimension field from the values object.

Inherit sale.order.line and override the _prepare_procurement_values method to include the product_dimension:

Hope it helps