diff --git a/sale_quotation_number/models/sale_order.py b/sale_quotation_number/models/sale_order.py
index 5209b9a57146..e4d2c28a5653 100644
--- a/sale_quotation_number/models/sale_order.py
+++ b/sale_quotation_number/models/sale_order.py
@@ -4,12 +4,16 @@
 # © 2020 Manuel Regidor  <manuel.regidor@sygel.es>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl)
 
-from odoo import api, models
+from odoo import api, fields, models
 
 
 class SaleOrder(models.Model):
     _inherit = "sale.order"
 
+    quotation_seq_used = fields.Boolean(
+        string="Quotation Sequence Used", default=False, copy=False, readonly=True
+    )
+    
     @api.model_create_multi
     def create(self, vals_list):
         for vals in vals_list:
@@ -22,6 +26,7 @@ def create(self, vals_list):
                         .next_by_code("sale.quotation")
                     )
                     vals["name"] = sequence or "/"
+                    vals["quotation_seq_used"] = True
         return super().create(vals_list)
 
     @api.model
@@ -43,12 +48,16 @@ def copy(self, default=None):
             default["origin"] = self.name
         return super().copy(default)
 
+    def get_sale_order_seq(self):
+        self.ensure_one()
+        return self.with_company(order.company_id.id).env["ir.sequence"].next_by_code("sale.order")
+
     def action_confirm(self):
         sequence = self.env["ir.sequence"].search(
             [("code", "=", "sale.quotation")], limit=1
         )
         for order in self:
-            if sequence and self.name[: len(sequence.prefix)] != sequence.prefix:
+            if not self.quotation_seq_used:
                 continue
             if order.state not in ("draft", "sent") or order.company_id.keep_name_so:
                 continue
@@ -56,10 +65,6 @@ def action_confirm(self):
                 quo = order.origin + ", " + order.name
             else:
                 quo = order.name
-            sequence = (
-                self.with_company(order.company_id.id)
-                .env["ir.sequence"]
-                .next_by_code("sale.order")
-            )
-            order.write({"origin": quo, "name": sequence})
+            sequence = order.get_sale_order_seq()
+            order.write({"origin": quo, "name": sequence, "quotation_seq_used": False})
         return super().action_confirm()