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diff --git a/addons/stock_landed_costs/models/product.py b/addons/stock_landed_costs/models/product.py
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+++ b/addons/stock_landed_costs/models/product.py
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+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import fields, models
+from odoo.addons.stock_landed_costs.models.stock_landed_cost import SPLIT_METHOD
+from odoo.exceptions import UserError
+from odoo import _
+
+
+class ProductTemplate(models.Model):
+    _inherit = "product.template"
+
+    landed_cost_ok = fields.Boolean('Is a Landed Cost', help='Indicates whether the product is a landed cost.')
+    split_method_landed_cost = fields.Selection(SPLIT_METHOD, string="Default Split Method",
+                                                help="Default Split Method when used for Landed Cost")
+
+    def write(self, vals):
+        for product in self:
+            if (('type' in vals and vals['type'] != 'service') or ('landed_cost_ok' in vals and not vals['landed_cost_ok'])) and product.type == 'service' and product.landed_cost_ok:
+                if self.env['account.move.line'].search_count([('product_id', 'in', product.product_variant_ids.ids), ('is_landed_costs_line', '=', True)]):
+                    raise UserError(_("You cannot change the product type or disable landed cost option because the product is used in an account move line."))
+                vals['landed_cost_ok'] = False
+
+        return super().write(vals)