diff --git a/api/v3/Order.php b/api/v3/Order.php
index 19b4eaefe206..88236aa0113a 100644
--- a/api/v3/Order.php
+++ b/api/v3/Order.php
@@ -117,6 +117,9 @@ function civicrm_api3_order_create($params) {
     }
   }
   $contributionParams = $params;
+  // If this is nested we need to set sequential to 0 as sequential handling is done
+  // in create_success & id will be miscalculated...
+  $contributionParams['sequential'] = 0;
   foreach ($contributionParams as $key => $value) {
     // Unset chained keys so the code does not attempt to do this chaining twice.
     // e.g if calling 'api.Payment.create' We want to finish creating the order first.
diff --git a/tests/phpunit/CiviTest/CiviUnitTestCase.php b/tests/phpunit/CiviTest/CiviUnitTestCase.php
index 273c243b184b..eec92dfb82ac 100644
--- a/tests/phpunit/CiviTest/CiviUnitTestCase.php
+++ b/tests/phpunit/CiviTest/CiviUnitTestCase.php
@@ -2461,10 +2461,10 @@ public function setupRecurringPaymentProcessorTransaction($recurParams = [], $co
       'payment_processor_id' => $this->_paymentProcessorID,
       // processor provided ID - use contact ID as proxy.
       'processor_id' => $this->_contactID,
-      'api.contribution.create' => $contributionParams,
-    ], $recurParams));
+      'api.Order.create' => $contributionParams,
+    ], $recurParams))['values'][0];
     $this->_contributionRecurID = $contributionRecur['id'];
-    $this->_contributionID = $contributionRecur['values']['0']['api.contribution.create']['id'];
+    $this->_contributionID = $contributionRecur['api.Order.create']['id'];
     $this->ids['Contribution'][0] = $this->_contributionID;
   }
 
@@ -2496,7 +2496,6 @@ public function setupMembershipRecurringPaymentProcessorTransaction($params = []
         'receive_date' => '2019-07-25 07:34:23',
       ]);
     }
-    $this->setupRecurringPaymentProcessorTransaction($recurParams);
 
     $this->ids['membership'] = $this->callAPISuccess('membership', 'create', [
       'contact_id' => $this->_contactID,
@@ -2505,32 +2504,33 @@ public function setupMembershipRecurringPaymentProcessorTransaction($params = []
       'format.only_id' => TRUE,
       'source' => 'Payment',
     ]);
-    //CRM-15055 creates line items we don't want so get rid of them so we can set up our own line items
-    CRM_Core_DAO::executeQuery("TRUNCATE civicrm_line_item");
-
-    $this->callAPISuccess('line_item', 'create', [
-      'entity_table' => 'civicrm_membership',
-      'entity_id' => $this->ids['membership'],
-      'contribution_id' => $this->_contributionID,
-      'label' => 'General',
-      'qty' => 1,
-      'unit_price' => 200,
-      'line_total' => 200,
-      'financial_type_id' => 1,
-      'price_field_id' => $this->callAPISuccess('price_field', 'getvalue', [
-        'return' => 'id',
-        'label' => 'Membership Amount',
-        'options' => ['limit' => 1, 'sort' => 'id DESC'],
-      ]),
-      'price_field_value_id' => $this->callAPISuccess('price_field_value', 'getvalue', [
-        'return' => 'id',
-        'label' => 'General',
-        'options' => ['limit' => 1, 'sort' => 'id DESC'],
-      ]),
-    ]);
-    $this->callAPISuccess('membership_payment', 'create', [
-      'contribution_id' => $this->_contributionID,
-      'membership_id' => $this->ids['membership'],
+    $this->setupRecurringPaymentProcessorTransaction($recurParams, [
+      'line_items' => [
+        [
+          'line_item' => [
+            [
+              'entity_table' => 'civicrm_membership',
+              'entity_id' => $this->ids['membership'],
+              'contribution_id' => $this->_contributionID,
+              'label' => 'General',
+              'qty' => 1,
+              'unit_price' => 200,
+              'line_total' => 200,
+              'financial_type_id' => 1,
+              'price_field_id' => $this->callAPISuccess('price_field', 'getvalue', [
+                'return' => 'id',
+                'label' => 'Membership Amount',
+                'options' => ['limit' => 1, 'sort' => 'id DESC'],
+              ]),
+              'price_field_value_id' => $this->callAPISuccess('price_field_value', 'getvalue', [
+                'return' => 'id',
+                'label' => 'General',
+                'options' => ['limit' => 1, 'sort' => 'id DESC'],
+              ]),
+            ],
+          ],
+        ],
+      ],
     ]);
   }