diff --git a/app/code/Magento/Paypal/Block/Adminhtml/Billing/Agreement/View/Form.php b/app/code/Magento/Paypal/Block/Adminhtml/Billing/Agreement/View/Form.php
index 31b3e0c1d6b6f..396c66d4e748e 100644
--- a/app/code/Magento/Paypal/Block/Adminhtml/Billing/Agreement/View/Form.php
+++ b/app/code/Magento/Paypal/Block/Adminhtml/Billing/Agreement/View/Form.php
@@ -13,5 +13,5 @@ class Form extends \Magento\Backend\Block\Template
     /**
      * @var string
      */
-    protected $_template = 'billing/agreement/view/form.phtml';
+    protected $_template = 'Magento_Paypal::billing/agreement/view/form.phtml';
 }
diff --git a/app/code/Magento/Paypal/Block/Adminhtml/Billing/Agreement/View/Tab/Info.php b/app/code/Magento/Paypal/Block/Adminhtml/Billing/Agreement/View/Tab/Info.php
index d133d19f9c202..39373017fa09a 100644
--- a/app/code/Magento/Paypal/Block/Adminhtml/Billing/Agreement/View/Tab/Info.php
+++ b/app/code/Magento/Paypal/Block/Adminhtml/Billing/Agreement/View/Tab/Info.php
@@ -15,7 +15,7 @@ class Info extends \Magento\Backend\Block\Template implements \Magento\Backend\B
     /**
      * @var string
      */
-    protected $_template = 'billing/agreement/view/tab/info.phtml';
+    protected $_template = 'Magento_Paypal::billing/agreement/view/tab/info.phtml';
 
     /**
      * Core registry
diff --git a/app/code/Magento/Paypal/Block/Adminhtml/System/Config/Payflowlink/Advanced.php b/app/code/Magento/Paypal/Block/Adminhtml/System/Config/Payflowlink/Advanced.php
index fe4f6ee1f6757..793fad152bc7e 100644
--- a/app/code/Magento/Paypal/Block/Adminhtml/System/Config/Payflowlink/Advanced.php
+++ b/app/code/Magento/Paypal/Block/Adminhtml/System/Config/Payflowlink/Advanced.php
@@ -16,5 +16,5 @@ class Advanced extends \Magento\Paypal\Block\Adminhtml\System\Config\Payflowlink
      *
      * @var string
      */
-    protected $_template = 'system/config/payflowlink/advanced.phtml';
+    protected $_template = 'Magento_Paypal::system/config/payflowlink/advanced.phtml';
 }
diff --git a/app/code/Magento/Paypal/Block/Adminhtml/System/Config/Payflowlink/Info.php b/app/code/Magento/Paypal/Block/Adminhtml/System/Config/Payflowlink/Info.php
index 30119063f5b5b..405de1ec03185 100644
--- a/app/code/Magento/Paypal/Block/Adminhtml/System/Config/Payflowlink/Info.php
+++ b/app/code/Magento/Paypal/Block/Adminhtml/System/Config/Payflowlink/Info.php
@@ -16,7 +16,7 @@ class Info extends \Magento\Config\Block\System\Config\Form\Field
      *
      * @var string
      */
-    protected $_template = 'system/config/payflowlink/info.phtml';
+    protected $_template = 'Magento_Paypal::system/config/payflowlink/info.phtml';
 
     /**
      * Render fieldset html
diff --git a/app/code/Magento/Paypal/Block/Hosted/Pro/Form.php b/app/code/Magento/Paypal/Block/Hosted/Pro/Form.php
index 92281d3058eef..70eff8f83ba99 100644
--- a/app/code/Magento/Paypal/Block/Hosted/Pro/Form.php
+++ b/app/code/Magento/Paypal/Block/Hosted/Pro/Form.php
@@ -15,5 +15,5 @@ class Form extends \Magento\Payment\Block\Form
     /**
      * @var string
      */
-    protected $_template = 'hss/info.phtml';
+    protected $_template = 'Magento_Paypal::hss/info.phtml';
 }
diff --git a/app/code/Magento/Paypal/Block/Iframe.php b/app/code/Magento/Paypal/Block/Iframe.php
index d6edb1ed25231..98fc05d0d2f60 100644
--- a/app/code/Magento/Paypal/Block/Iframe.php
+++ b/app/code/Magento/Paypal/Block/Iframe.php
@@ -44,7 +44,7 @@ class Iframe extends \Magento\Payment\Block\Form
     /**
      * @var string
      */
-    protected $_template = 'hss/js.phtml';
+    protected $_template = 'Magento_Paypal::hss/js.phtml';
 
     /**
      * @var \Magento\Sales\Model\OrderFactory
diff --git a/app/code/Magento/Paypal/Block/Payflow/Advanced/Form.php b/app/code/Magento/Paypal/Block/Payflow/Advanced/Form.php
index d777279ad47a8..159abd4e2f1bb 100644
--- a/app/code/Magento/Paypal/Block/Payflow/Advanced/Form.php
+++ b/app/code/Magento/Paypal/Block/Payflow/Advanced/Form.php
@@ -15,7 +15,7 @@ class Form extends \Magento\Paypal\Block\Payflow\Link\Form
     /**
      * @var string
      */
-    protected $_template = 'payflowadvanced/info.phtml';
+    protected $_template = 'Magento_Paypal::payflowadvanced/info.phtml';
 
     /**
      * Get frame action URL
diff --git a/app/code/Magento/Paypal/Block/Payflow/Link/Form.php b/app/code/Magento/Paypal/Block/Payflow/Link/Form.php
index f414a63d69046..fc880f494c859 100644
--- a/app/code/Magento/Paypal/Block/Payflow/Link/Form.php
+++ b/app/code/Magento/Paypal/Block/Payflow/Link/Form.php
@@ -15,7 +15,7 @@ class Form extends \Magento\Payment\Block\Form
     /**
      * @var string
      */
-    protected $_template = 'payflowlink/info.phtml';
+    protected $_template = 'Magento_Paypal::payflowlink/info.phtml';
 
     /**
      * Get frame action URL
diff --git a/app/code/Magento/Sales/Block/Adminhtml/Order/Address/Form.php b/app/code/Magento/Sales/Block/Adminhtml/Order/Address/Form.php
index f2b454260dc22..6cab109b44dbb 100644
--- a/app/code/Magento/Sales/Block/Adminhtml/Order/Address/Form.php
+++ b/app/code/Magento/Sales/Block/Adminhtml/Order/Address/Form.php
@@ -19,7 +19,7 @@ class Form extends \Magento\Sales\Block\Adminhtml\Order\Create\Form\Address
      *
      * @var string
      */
-    protected $_template = 'order/address/form.phtml';
+    protected $_template = 'Magento_Sales::order/address/form.phtml';
 
     /**
      * Core registry
diff --git a/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Grandtotal.php b/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Grandtotal.php
index eb437915ad668..cf9f8a44dee27 100644
--- a/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Grandtotal.php
+++ b/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Grandtotal.php
@@ -20,7 +20,7 @@ class Grandtotal extends \Magento\Sales\Block\Adminhtml\Order\Create\Totals\Defa
      *
      * @var string
      */
-    protected $_template = 'order/create/totals/grandtotal.phtml';
+    protected $_template = 'Magento_Sales::order/create/totals/grandtotal.phtml';
 
     /**
      * Tax config
diff --git a/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Shipping.php b/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Shipping.php
index 9225d8c2e5f68..34a9ed8070e26 100644
--- a/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Shipping.php
+++ b/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Shipping.php
@@ -20,7 +20,7 @@ class Shipping extends \Magento\Sales\Block\Adminhtml\Order\Create\Totals\Defaul
      *
      * @var string
      */
-    protected $_template = 'order/create/totals/shipping.phtml';
+    protected $_template = 'Magento_Sales::order/create/totals/shipping.phtml';
 
     /**
      * Tax config
diff --git a/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Subtotal.php b/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Subtotal.php
index cfdd73de9d8b8..166f3c9637ebb 100644
--- a/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Subtotal.php
+++ b/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Subtotal.php
@@ -20,7 +20,7 @@ class Subtotal extends \Magento\Sales\Block\Adminhtml\Order\Create\Totals\Defaul
      *
      * @var string
      */
-    protected $_template = 'order/create/totals/subtotal.phtml';
+    protected $_template = 'Magento_Sales::order/create/totals/subtotal.phtml';
 
     /**
      * Tax config
diff --git a/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Tax.php b/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Tax.php
index d3da37c3f1bf8..207a4eca60213 100644
--- a/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Tax.php
+++ b/app/code/Magento/Sales/Block/Adminhtml/Order/Create/Totals/Tax.php
@@ -18,5 +18,5 @@ class Tax extends \Magento\Sales\Block\Adminhtml\Order\Create\Totals\DefaultTota
      *
      * @var string
      */
-    protected $_template = 'order/create/totals/tax.phtml';
+    protected $_template = 'Magento_Sales::order/create/totals/tax.phtml';
 }
diff --git a/app/code/Magento/Sales/Block/Adminhtml/Order/Details.php b/app/code/Magento/Sales/Block/Adminhtml/Order/Details.php
index 5c3a7fce805cc..261f4b0cfd12a 100644
--- a/app/code/Magento/Sales/Block/Adminhtml/Order/Details.php
+++ b/app/code/Magento/Sales/Block/Adminhtml/Order/Details.php
@@ -14,5 +14,5 @@ class Details extends \Magento\Framework\View\Element\Template
     /**
      * @var string
      */
-    protected $_template = 'order/details.phtml';
+    protected $_template = 'Magento_Sales::order/details.phtml';
 }
diff --git a/app/code/Magento/Sales/Block/Adminhtml/Order/View/Form.php b/app/code/Magento/Sales/Block/Adminhtml/Order/View/Form.php
index 82c3effcab62d..6c06e9d624c81 100644
--- a/app/code/Magento/Sales/Block/Adminhtml/Order/View/Form.php
+++ b/app/code/Magento/Sales/Block/Adminhtml/Order/View/Form.php
@@ -17,5 +17,5 @@ class Form extends \Magento\Backend\Block\Template
      *
      * @var string
      */
-    protected $_template = 'order/view/form.phtml';
+    protected $_template = 'Magento_Sales::order/view/form.phtml';
 }
diff --git a/app/code/Magento/Sales/Block/Adminhtml/Order/View/Tab/History.php b/app/code/Magento/Sales/Block/Adminhtml/Order/View/Tab/History.php
index 5489a0b2e513f..64b53d10d4af6 100644
--- a/app/code/Magento/Sales/Block/Adminhtml/Order/View/Tab/History.php
+++ b/app/code/Magento/Sales/Block/Adminhtml/Order/View/Tab/History.php
@@ -18,7 +18,7 @@ class History extends \Magento\Backend\Block\Template implements \Magento\Backen
      *
      * @var string
      */
-    protected $_template = 'order/view/tab/history.phtml';
+    protected $_template = 'Magento_Sales::order/view/tab/history.phtml';
 
     /**
      * Core registry
diff --git a/app/code/Magento/Sales/Block/Adminhtml/Rss/Order/Grid/Link.php b/app/code/Magento/Sales/Block/Adminhtml/Rss/Order/Grid/Link.php
index fbb78970a4de0..512539824da20 100644
--- a/app/code/Magento/Sales/Block/Adminhtml/Rss/Order/Grid/Link.php
+++ b/app/code/Magento/Sales/Block/Adminhtml/Rss/Order/Grid/Link.php
@@ -14,7 +14,7 @@ class Link extends \Magento\Framework\View\Element\Template
     /**
      * @var string
      */
-    protected $_template = 'rss/order/grid/link.phtml';
+    protected $_template = 'Magento_Sales::rss/order/grid/link.phtml';
 
     /**
      * @var \Magento\Framework\App\Rss\UrlBuilderInterface
diff --git a/app/code/Magento/Sales/Block/Order/Info/Buttons.php b/app/code/Magento/Sales/Block/Order/Info/Buttons.php
index a27b55cd8543f..18e79f6a76ecf 100644
--- a/app/code/Magento/Sales/Block/Order/Info/Buttons.php
+++ b/app/code/Magento/Sales/Block/Order/Info/Buttons.php
@@ -20,7 +20,7 @@ class Buttons extends \Magento\Framework\View\Element\Template
     /**
      * @var string
      */
-    protected $_template = 'order/info/buttons.phtml';
+    protected $_template = 'Magento_Sales::order/info/buttons.phtml';
 
     /**
      * Core registry
diff --git a/app/code/Magento/Sales/Block/Order/Info/Buttons/Rss.php b/app/code/Magento/Sales/Block/Order/Info/Buttons/Rss.php
index 77e20eaa8d07b..2b84b8f1444b6 100644
--- a/app/code/Magento/Sales/Block/Order/Info/Buttons/Rss.php
+++ b/app/code/Magento/Sales/Block/Order/Info/Buttons/Rss.php
@@ -16,7 +16,7 @@ class Rss extends \Magento\Framework\View\Element\Template
     /**
      * @var string
      */
-    protected $_template = 'order/info/buttons/rss.phtml';
+    protected $_template = 'Magento_Sales::order/info/buttons/rss.phtml';
 
     /**
      * @var \Magento\Sales\Model\OrderFactory
diff --git a/app/code/Magento/Sales/Block/Order/Invoice.php b/app/code/Magento/Sales/Block/Order/Invoice.php
index 2d8448ea5bc98..24ddf4bac7696 100644
--- a/app/code/Magento/Sales/Block/Order/Invoice.php
+++ b/app/code/Magento/Sales/Block/Order/Invoice.php
@@ -18,7 +18,7 @@ class Invoice extends \Magento\Sales\Block\Order\Invoice\Items
     /**
      * @var string
      */
-    protected $_template = 'order/invoice.phtml';
+    protected $_template = 'Magento_Sales::order/invoice.phtml';
 
     /**
      * @var \Magento\Framework\App\Http\Context
diff --git a/app/code/Magento/Sales/Block/Order/View.php b/app/code/Magento/Sales/Block/Order/View.php
index 870e2e15ab7b3..03d1340e0f690 100644
--- a/app/code/Magento/Sales/Block/Order/View.php
+++ b/app/code/Magento/Sales/Block/Order/View.php
@@ -18,7 +18,7 @@ class View extends \Magento\Framework\View\Element\Template
     /**
      * @var string
      */
-    protected $_template = 'order/view.phtml';
+    protected $_template = 'Magento_Sales::order/view.phtml';
 
     /**
      * Core registry