diff --git a/InvenTree/InvenTree/helpers.py b/InvenTree/InvenTree/helpers.py
index 68f42bab87..675898e3d0 100644
--- a/InvenTree/InvenTree/helpers.py
+++ b/InvenTree/InvenTree/helpers.py
@@ -458,8 +458,18 @@ def extract_serial_numbers(serials, expected_quantity, next_number: int):
     if len(serials) == 0:
         raise ValidationError([_("Empty serial number string")])
 
-    for group in groups:
+    # If the user has supplied the correct number of serials, don't process them for groups
+    # just add them so any duplicates (or future validations) are checked
+    if len(groups) == expected_quantity:
+        for group in groups:
+            add_sn(group)
 
+        if len(errors) > 0:
+            raise ValidationError(errors)
+
+        return numbers
+
+    for group in groups:
         group = group.strip()
 
         # Hyphen indicates a range of numbers
diff --git a/InvenTree/InvenTree/tests.py b/InvenTree/InvenTree/tests.py
index 51e5527535..13f9198d92 100644
--- a/InvenTree/InvenTree/tests.py
+++ b/InvenTree/InvenTree/tests.py
@@ -257,6 +257,11 @@ class TestSerialNumberExtraction(TestCase):
         self.assertEqual(len(sn), 5)
         self.assertEqual(sn, [1, 2, 4, 5, 6])
 
+        # Test groups are not interpolated if enough serials are supplied
+        sn = e("1, 2, 3, AF5-69H, 5", 5, 1)
+        self.assertEqual(len(sn), 5)
+        self.assertEqual(sn, [1, 2, 3, "AF5-69H", 5])
+
         # Test groups are not interpolated with more than one hyphen in a word
         sn = e("1, 2, TG-4SR-92, 4+", 5, 1)
         self.assertEqual(len(sn), 5)