From 8e64645b5a0f3864698052d2a2b828c19c5c2b5a Mon Sep 17 00:00:00 2001
From: Laurent Smet <las@odoo.com>
Date: Thu, 19 Mar 2020 09:50:43 +0000
Subject: [PATCH] [FIX] purchase: Fix unknown field '_invoice_payment_ref'

closes odoo/odoo#48008

X-original-commit: 3f7da29c850740d7b45dda5210d9fa612b4405cb
Signed-off-by: oco-odoo <oco-odoo@users.noreply.github.com>
Signed-off-by: Laurent Smet <smetl@users.noreply.github.com>
---
 addons/purchase/models/account_invoice.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/addons/purchase/models/account_invoice.py b/addons/purchase/models/account_invoice.py
index 12369be733a..231d37b9b3d 100644
--- a/addons/purchase/models/account_invoice.py
+++ b/addons/purchase/models/account_invoice.py
@@ -61,9 +61,9 @@ class AccountMove(models.Model):
         refs = [ref for ref in refs if ref]
         self.ref = ','.join(refs)
 
-        # Compute _invoice_payment_ref.
+        # Compute invoice_payment_ref.
         if len(refs) == 1:
-            self._invoice_payment_ref = refs[0]
+            self.invoice_payment_ref = refs[0]
 
         self.purchase_id = False
         self._onchange_currency()