diff --git a/src/Google/AdsApi/AdWords/Shopping/v201702/ProductPartitions.php b/src/Google/AdsApi/AdWords/Shopping/v201702/ProductPartitions.php
index 7089e75bf..c779aa468 100755
--- a/src/Google/AdsApi/AdWords/Shopping/v201702/ProductPartitions.php
+++ b/src/Google/AdsApi/AdWords/Shopping/v201702/ProductPartitions.php
@@ -241,7 +241,9 @@ public static function showAdGroupTree(AdWordsServices $adWordsServices,
       if ($page->getEntries() !== null) {
         $totalNumEntries = $page->getTotalNumEntries();
         foreach ($page->getEntries() as $adGroupCriterion) {
-          $children[$adGroupCriterion->getCriterion()->getId()] = [];
+          if (!array_key_exists($adGroupCriterion->getCriterion()->getId(), $children)) {
+            $children[$adGroupCriterion->getCriterion()->getId()] = [];
+          }
 
           if ($adGroupCriterion->getCriterion()->getParentCriterionId()
               !== null) {
diff --git a/src/Google/AdsApi/AdWords/Shopping/v201705/ProductPartitions.php b/src/Google/AdsApi/AdWords/Shopping/v201705/ProductPartitions.php
index 049b51152..67a0552f8 100755
--- a/src/Google/AdsApi/AdWords/Shopping/v201705/ProductPartitions.php
+++ b/src/Google/AdsApi/AdWords/Shopping/v201705/ProductPartitions.php
@@ -241,7 +241,9 @@ public static function showAdGroupTree(AdWordsServices $adWordsServices,
       if ($page->getEntries() !== null) {
         $totalNumEntries = $page->getTotalNumEntries();
         foreach ($page->getEntries() as $adGroupCriterion) {
-          $children[$adGroupCriterion->getCriterion()->getId()] = [];
+          if (!array_key_exists($adGroupCriterion->getCriterion()->getId(), $children)) {
+            $children[$adGroupCriterion->getCriterion()->getId()] = [];
+          }
 
           if ($adGroupCriterion->getCriterion()->getParentCriterionId()
               !== null) {
diff --git a/src/Google/AdsApi/AdWords/Shopping/v201708/ProductPartitions.php b/src/Google/AdsApi/AdWords/Shopping/v201708/ProductPartitions.php
index a506139d3..ed00a048e 100755
--- a/src/Google/AdsApi/AdWords/Shopping/v201708/ProductPartitions.php
+++ b/src/Google/AdsApi/AdWords/Shopping/v201708/ProductPartitions.php
@@ -241,7 +241,9 @@ public static function showAdGroupTree(AdWordsServices $adWordsServices,
       if ($page->getEntries() !== null) {
         $totalNumEntries = $page->getTotalNumEntries();
         foreach ($page->getEntries() as $adGroupCriterion) {
-          $children[$adGroupCriterion->getCriterion()->getId()] = [];
+          if (!array_key_exists($adGroupCriterion->getCriterion()->getId(), $children)) {
+            $children[$adGroupCriterion->getCriterion()->getId()] = [];
+          }
 
           if ($adGroupCriterion->getCriterion()->getParentCriterionId()
               !== null) {
diff --git a/src/Google/AdsApi/AdWords/Shopping/v201710/ProductPartitions.php b/src/Google/AdsApi/AdWords/Shopping/v201710/ProductPartitions.php
index 16f1cc605..52e8a5ca1 100755
--- a/src/Google/AdsApi/AdWords/Shopping/v201710/ProductPartitions.php
+++ b/src/Google/AdsApi/AdWords/Shopping/v201710/ProductPartitions.php
@@ -241,7 +241,9 @@ public static function showAdGroupTree(AdWordsServices $adWordsServices,
       if ($page->getEntries() !== null) {
         $totalNumEntries = $page->getTotalNumEntries();
         foreach ($page->getEntries() as $adGroupCriterion) {
-          $children[$adGroupCriterion->getCriterion()->getId()] = [];
+          if (!array_key_exists($adGroupCriterion->getCriterion()->getId(), $children)) {
+            $children[$adGroupCriterion->getCriterion()->getId()] = [];
+          }
 
           if ($adGroupCriterion->getCriterion()->getParentCriterionId()
               !== null) {