diff --git a/l10n_ar_arba_ws/__init__.py b/l10n_ar_arba_ws/__init__.py
index d0337769..173091eb 100644
--- a/l10n_ar_arba_ws/__init__.py
+++ b/l10n_ar_arba_ws/__init__.py
@@ -3,3 +3,4 @@
 # directory
 ##############################################################################
 from . import models
+from . import wizard
diff --git a/l10n_ar_arba_ws/__manifest__.py b/l10n_ar_arba_ws/__manifest__.py
index e1d7f3b2..e9028f2b 100644
--- a/l10n_ar_arba_ws/__manifest__.py
+++ b/l10n_ar_arba_ws/__manifest__.py
@@ -37,6 +37,7 @@
         "views/account_payment_views.xml",
         "views/res_config_settings_views.xml",
         "views/l10n_ar_payment_withholding_views.xml",
+        "wizard/arba_withholding_draft_warning_views.xml",
     ],
     "installable": True,
     "auto_install": False,
diff --git a/l10n_ar_arba_ws/models/account_payment.py b/l10n_ar_arba_ws/models/account_payment.py
index b07ef108..c50cb09c 100644
--- a/l10n_ar_arba_ws/models/account_payment.py
+++ b/l10n_ar_arba_ws/models/account_payment.py
@@ -24,3 +24,46 @@ def action_post(self):
             )
             wh_lines.send_to_arba()
         return res
+
+    def action_draft(self):
+        """Verificar si hay retenciones informadas a ARBA antes de volver a borrador.
+        Si hay retenciones informadas, mostrar un warning."""
+        # Verificar si debemos mostrar el warning (solo si no viene del wizard)
+        if not self.env.context.get("skip_arba_draft_warning"):
+            for payment in self:
+                # Buscar retenciones que ya fueron informadas a ARBA
+                wh_lines = payment.l10n_ar_withholding_line_ids.filtered(
+                    lambda x: x.is_arba_ws_needed and x.l10n_ar_cert_number and x.l10n_ar_dj_arba_id
+                )
+
+                if wh_lines:
+                    # Generar información HTML de las retenciones
+                    wh_info_html = "<ul>"
+                    for wh in wh_lines:
+                        wh_info_html += (
+                            f"<li><strong>{wh.name}</strong> - "
+                            f"Certificado: {wh.l10n_ar_cert_number} - "
+                            f"DDJJ: {wh.l10n_ar_dj_arba_id.display_name} "
+                            f"(Monto: ${wh.amount:,.2f})</li>"
+                        )
+                    wh_info_html += "</ul>"
+
+                    # Crear el wizard con el warning
+                    wizard = self.env["arba.withholding.draft.warning"].create(
+                        {
+                            "payment_id": payment.id,
+                            "withholding_count": len(wh_lines),
+                            "withholding_info": wh_info_html,
+                        }
+                    )
+
+                    return {
+                        "name": "Advertencia - Retenciones ARBA",
+                        "type": "ir.actions.act_window",
+                        "res_model": "arba.withholding.draft.warning",
+                        "res_id": wizard.id,
+                        "view_mode": "form",
+                        "target": "new",
+                    }
+
+        return super().action_draft()
diff --git a/l10n_ar_arba_ws/security/ir.model.access.csv b/l10n_ar_arba_ws/security/ir.model.access.csv
index e3bf78c1..71bbca60 100644
--- a/l10n_ar_arba_ws/security/ir.model.access.csv
+++ b/l10n_ar_arba_ws/security/ir.model.access.csv
@@ -3,3 +3,4 @@ l10n_ar_arba_ws.access_l10n_ar_dj_arba_admin,access_l10n_ar_dj_arba_admin,l10n_a
 l10n_ar_arba_ws.access_l10n_ar_dj_arba_readonly,access_l10n_ar_dj_arba_readonly,l10n_ar_arba_ws.model_l10n_ar_dj_arba,account.group_account_readonly,1,0,0,0
 l10n_ar_arba_ws.access_l10n_ar_dj_arba_invoice,access_l10n_ar_dj_arba_invoice,l10n_ar_arba_ws.model_l10n_ar_dj_arba,account.group_account_invoice,1,1,1,1
 l10n_ar_arba_ws.access_l10n_ar_dj_arba_account_user,access_l10n_ar_dj_arba_account_user,l10n_ar_arba_ws.model_l10n_ar_dj_arba,account.group_account_user,1,1,1,1
+l10n_ar_arba_ws.access_arba_withholding_draft_warning_user,access_arba_withholding_draft_warning_user,l10n_ar_arba_ws.model_arba_withholding_draft_warning,account.group_account_user,1,1,1,1
diff --git a/l10n_ar_arba_ws/wizard/__init__.py b/l10n_ar_arba_ws/wizard/__init__.py
new file mode 100644
index 00000000..bc5a1261
--- /dev/null
+++ b/l10n_ar_arba_ws/wizard/__init__.py
@@ -0,0 +1,2 @@
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+from . import arba_withholding_draft_warning
diff --git a/l10n_ar_arba_ws/wizard/arba_withholding_draft_warning.py b/l10n_ar_arba_ws/wizard/arba_withholding_draft_warning.py
new file mode 100644
index 00000000..61c42706
--- /dev/null
+++ b/l10n_ar_arba_ws/wizard/arba_withholding_draft_warning.py
@@ -0,0 +1,19 @@
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+from odoo import fields, models
+
+
+class ArbaWithholdingDraftWarning(models.TransientModel):
+    _name = "arba.withholding.draft.warning"
+    _description = "ARBA Withholding Draft Warning"
+
+    payment_id = fields.Many2one("account.payment", required=True)
+    withholding_count = fields.Integer(readonly=True)
+    withholding_info = fields.Html(readonly=True)
+
+    def action_confirm_reset_to_draft(self):
+        """Confirma que el usuario entiende que la retención quedará informada en ARBA
+        y procede a volver el pago a borrador."""
+        self.ensure_one()
+        # Volver el pago a borrador (las retenciones con certificado no se reenviarán)
+        self.payment_id.with_context(skip_arba_draft_warning=True).action_draft()
+        return {"type": "ir.actions.act_window_close"}
diff --git a/l10n_ar_arba_ws/wizard/arba_withholding_draft_warning_views.xml b/l10n_ar_arba_ws/wizard/arba_withholding_draft_warning_views.xml
new file mode 100644
index 00000000..ecd47760
--- /dev/null
+++ b/l10n_ar_arba_ws/wizard/arba_withholding_draft_warning_views.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="view_arba_withholding_draft_warning_form" model="ir.ui.view">
+        <field name="name">arba.withholding.draft.warning.form</field>
+        <field name="model">arba.withholding.draft.warning</field>
+        <field name="arch" type="xml">
+            <form string="ARBA Withholding Warning">
+                <div class="alert alert-warning" role="alert">
+                    <p><strong>⚠️ Advertencia:</strong></p>
+                    <p>Este pago tiene <strong><field name="withholding_count"/> retención(es)</strong> que ya fueron informadas a ARBA a través de una Declaración Jurada (DDJJ).</p>
+                    <p>Recomendamos no realizar modificaciones en el pago, ya que las mismas no impactarán en las retenciones ya informadas.</p>
+                </div>
+                <group>
+                    <field name="payment_id" invisible="1"/>
+                    <field name="withholding_info" nolabel="1" widget="html"/>
+                </group>
+                <footer>
+                    <button string="Entiendo, volver a borrador" name="action_confirm_reset_to_draft" type="object" class="btn-primary"/>
+                    <button string="Cancelar" special="cancel" class="btn-secondary"/>
+                </footer>
+            </form>
+        </field>
+    </record>
+</odoo>