diff --git a/modules/sale_complaint/CHANGELOG b/modules/sale_complaint/CHANGELOG
index c5838d9861..7ddcf21de1 100644
--- a/modules/sale_complaint/CHANGELOG
+++ b/modules/sale_complaint/CHANGELOG
@@ -1,3 +1,4 @@
+* Raise a warning when submitting complaint for the same origin
 
 Version 7.2.0 - 2024-04-29
 --------------------------
diff --git a/modules/sale_complaint/complaint.py b/modules/sale_complaint/complaint.py
index 419e1964d3..62c2455fd0 100644
--- a/modules/sale_complaint/complaint.py
+++ b/modules/sale_complaint/complaint.py
@@ -17,8 +17,11 @@ from trytond.modules.currency.fields import Monetary
 from trytond.modules.product import price_digits
 from trytond.pool import Pool
 from trytond.pyson import Bool, Eval, If
+from trytond.tools import grouped_slice
 from trytond.transaction import Transaction
 
+from .exceptions import ComplaintSimilarWarning
+
 
 class Type(DeactivableMixin, ModelSQL, ModelView):
     'Customer Complaint Type'
@@ -332,7 +335,7 @@ class Complaint(Workflow, ModelSQL, ModelView):
     @Workflow.transition('waiting')
     @set_employee('submitted_by')
     def wait(cls, complaints):
-        pass
+        cls._check_similar(complaints)
 
     @classmethod
     @ModelView.button
@@ -377,6 +380,57 @@ class Complaint(Workflow, ModelSQL, ModelView):
                 action.result = record
         Action.save(sum(list(actions.values()), []))
 
+    @classmethod
+    def _check_similar(cls, complaints):
+        pool = Pool()
+        Warning = pool.get('res.user.warning')
+        for sub_complaints in grouped_slice(complaints):
+            sub_complaints = list(sub_complaints)
+            domain = list(filter(None,
+                    (c._similar_domain() for c in sub_complaints)))
+            if not domain:
+                continue
+            if cls.search(['OR'] + domain, order=[]):
+                for complaint in sub_complaints:
+                    domain = complaint._similar_domain()
+                    if not domain:
+                        continue
+                    try:
+                        similar, = cls.search(domain, limit=1)
+                    except ValueError:
+                        continue
+                    warning_key = Warning.format(
+                        'complaint_similar', [complaint])
+                    if Warning.check(warning_key):
+                        raise ComplaintSimilarWarning(warning_key,
+                            gettext('sale_complaint.msg_complaint_similar',
+                                similar=similar.rec_name,
+                                complaint=complaint.rec_name))
+
+    def _similar_domain(self):
+        pool = Pool()
+        Sale = pool.get('sale.sale')
+        SaleLine = pool.get('sale.line')
+        Invoice = pool.get('account.invoice')
+        InvoiceLine = pool.get('account.invoice.line')
+        domain = ['OR',
+            ('origin', '=', str(self.origin)),
+            ]
+        if isinstance(self.origin, Sale):
+            domain.append(('origin.sale', '=', self.origin.id, 'sale.line'))
+        elif isinstance(self.origin, SaleLine):
+            domain.append(('origin', '=', str(self.origin.sale)))
+        elif isinstance(self.origin, Invoice):
+            domain.append(
+                ('origin.invoice', '=', self.origin.id,
+                    'account.invoice.line'))
+        elif isinstance(self.origin, InvoiceLine):
+            domain.append(('origin', '=', str(self.origin.invoice)))
+        return [
+            domain,
+            ('id', '!=', self.id),
+            ]
+
 
 class Action(ModelSQL, ModelView):
     'Customer Complaint Action'
diff --git a/modules/sale_complaint/exceptions.py b/modules/sale_complaint/exceptions.py
new file mode 100644
index 0000000000..eea30e586f
--- /dev/null
+++ b/modules/sale_complaint/exceptions.py
@@ -0,0 +1,8 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+
+from trytond.exceptions import UserWarning
+
+
+class ComplaintSimilarWarning(UserWarning):
+    pass
diff --git a/modules/sale_complaint/message.xml b/modules/sale_complaint/message.xml
index 11a58a56c1..ae04a0a5d7 100644
--- a/modules/sale_complaint/message.xml
+++ b/modules/sale_complaint/message.xml
@@ -3,6 +3,9 @@
 this repository contains the full copyright notices and license terms. -->
 <tryton>
     <data grouped="1">
+        <record model="ir.message" id="msg_complaint_similar">
+            <field name="text">The complaint "%(complaint)s" is similar to complaint "%(similar)s".</field>
+        </record>
         <record model="ir.message" id="msg_complaint_delete_draft">
             <field name="text">To delete complaint "%(complaint)s" you must reset it to draft state.</field>
         </record>
diff --git a/modules/sale_complaint/tests/scenario_sale_complaint.rst b/modules/sale_complaint/tests/scenario_sale_complaint.rst
index dbd8d5ad86..2455088f58 100644
--- a/modules/sale_complaint/tests/scenario_sale_complaint.rst
+++ b/modules/sale_complaint/tests/scenario_sale_complaint.rst
@@ -162,6 +162,11 @@ Create a complaint to return partially the sale::
     >>> complaint.state
     'draft'
     >>> complaint.click('wait')
+    Traceback (most recent call last):
+        ...
+    ComplaintSimilarWarning: ...
+    >>> config.skip_warning = True
+    >>> complaint.click('wait')
     >>> complaint.state
     'waiting'
     >>> complaint.click('approve')