diff --git a/app/code/Magento/Checkout/Model/ShippingInformationManagement.php b/app/code/Magento/Checkout/Model/ShippingInformationManagement.php
index f397a8ddc9cf1..db5c895c5a5d3 100644
--- a/app/code/Magento/Checkout/Model/ShippingInformationManagement.php
+++ b/app/code/Magento/Checkout/Model/ShippingInformationManagement.php
@@ -27,6 +27,7 @@
 use Magento\Quote\Model\QuoteAddressValidator;
 use Magento\Quote\Model\ShippingAssignmentFactory;
 use Magento\Quote\Model\ShippingFactory;
+use Magento\Sales\Model\Order;
 use Psr\Log\LoggerInterface as Logger;
 
 /**
@@ -184,7 +185,7 @@ public function saveAddressInformation(
             $carrierCode = $addressInformation->getShippingCarrierCode();
             $address->setLimitCarrier($carrierCode);
             $methodCode = $addressInformation->getShippingMethodCode();
-            $quote = $this->prepareShippingAssignment($quote, $address, $carrierCode . '_' . $methodCode);
+            $quote = $this->prepareShippingAssignment($quote, $address, $carrierCode . Order::DELIMITER_SHIPPING_METHOD . $methodCode);
 
             $quote->setIsMultiShipping(false);
 
diff --git a/app/code/Magento/Checkout/Model/TotalsInformationManagement.php b/app/code/Magento/Checkout/Model/TotalsInformationManagement.php
index 25e2f0ba4e005..200b768265c0e 100644
--- a/app/code/Magento/Checkout/Model/TotalsInformationManagement.php
+++ b/app/code/Magento/Checkout/Model/TotalsInformationManagement.php
@@ -6,6 +6,7 @@
 namespace Magento\Checkout\Model;
 
 use Magento\Checkout\Api\Data\TotalsInformationInterface;
+use Magento\Sales\Model\Order;
 
 /**
  * Class for management of totals information.
@@ -54,7 +55,7 @@ public function calculate(
             $quote->setShippingAddress($addressInformation->getAddress());
             if ($addressInformation->getShippingCarrierCode() && $addressInformation->getShippingMethodCode()) {
                 $shippingMethod = implode(
-                    '_',
+                    Order::DELIMITER_SHIPPING_METHOD,
                     [$addressInformation->getShippingCarrierCode(), $addressInformation->getShippingMethodCode()]
                 );
                 $quoteShippingAddress = $quote->getShippingAddress();
diff --git a/app/code/Magento/Checkout/Test/Unit/Model/ShippingInformationManagementTest.php b/app/code/Magento/Checkout/Test/Unit/Model/ShippingInformationManagementTest.php
index 3902901f280ae..cef3ea67e7f6f 100644
--- a/app/code/Magento/Checkout/Test/Unit/Model/ShippingInformationManagementTest.php
+++ b/app/code/Magento/Checkout/Test/Unit/Model/ShippingInformationManagementTest.php
@@ -31,6 +31,7 @@
 use Magento\Quote\Model\ShippingAssignment;
 use Magento\Quote\Model\ShippingAssignmentFactory;
 use Magento\Quote\Model\ShippingFactory;
+use Magento\Sales\Model\Order;
 use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\MockObject\RuntimeException;
 use PHPUnit\Framework\TestCase;
@@ -359,7 +360,7 @@ public function testSaveAddressInformationWithLocalizedException(): void
             ->method('getCountryId')
             ->willReturn('USA');
 
-        $this->setShippingAssignmentsMocks($carrierCode . '_' . $shippingMethod);
+        $this->setShippingAssignmentsMocks($carrierCode . Order::DELIMITER_SHIPPING_METHOD . $shippingMethod);
 
         $this->quoteMock->expects($this->once())
             ->method('getItemsCount')
@@ -425,7 +426,7 @@ public function testSaveAddressInformationIfCanNotSaveQuote(): void
             ->method('getCountryId')
             ->willReturn('USA');
 
-        $this->setShippingAssignmentsMocks($carrierCode . '_' . $shippingMethod);
+        $this->setShippingAssignmentsMocks($carrierCode . Order::DELIMITER_SHIPPING_METHOD . $shippingMethod);
 
         $this->quoteMock->expects($this->once())
             ->method('getItemsCount')
@@ -488,7 +489,7 @@ public function testSaveAddressInformationIfCarrierCodeIsInvalid(): void
             ->method('getCountryId')
             ->willReturn('USA');
 
-        $this->setShippingAssignmentsMocks($carrierCode . '_' . $shippingMethod);
+        $this->setShippingAssignmentsMocks($carrierCode . Order::DELIMITER_SHIPPING_METHOD . $shippingMethod);
 
         $this->quoteMock->expects($this->once())
             ->method('getItemsCount')
@@ -563,7 +564,7 @@ public function testSaveAddressInformation(): void
             ->method('getCountryId')
             ->willReturn('USA');
 
-        $this->setShippingAssignmentsMocks($carrierCode . '_' . $shippingMethod);
+        $this->setShippingAssignmentsMocks($carrierCode . Order::DELIMITER_SHIPPING_METHOD . $shippingMethod);
 
         $this->quoteMock->expects($this->once())
             ->method('getItemsCount')
diff --git a/app/code/Magento/Checkout/view/frontend/web/js/model/checkout-data-resolver.js b/app/code/Magento/Checkout/view/frontend/web/js/model/checkout-data-resolver.js
index ad44c00763dcd..07d67718db07f 100644
--- a/app/code/Magento/Checkout/view/frontend/web/js/model/checkout-data-resolver.js
+++ b/app/code/Magento/Checkout/view/frontend/web/js/model/checkout-data-resolver.js
@@ -137,7 +137,7 @@ define([
 
             if (!availableRate && selectedShippingRate) {
                 availableRate = _.find(ratesData, function (rate) {
-                    return rate['carrier_code'] + '_' + rate['method_code'] === selectedShippingRate;
+                    return rate['carrier_code'] + '::' + rate['method_code'] === selectedShippingRate;
                 });
             }
 
diff --git a/app/code/Magento/Checkout/view/frontend/web/js/view/cart/shipping-rates.js b/app/code/Magento/Checkout/view/frontend/web/js/view/cart/shipping-rates.js
index 9a1ad85624a77..9c0af4a286f8b 100644
--- a/app/code/Magento/Checkout/view/frontend/web/js/view/cart/shipping-rates.js
+++ b/app/code/Magento/Checkout/view/frontend/web/js/view/cart/shipping-rates.js
@@ -25,7 +25,7 @@ define([
         shippingRateGroups: ko.observableArray([]),
         selectedShippingMethod: ko.computed(function () {
             return quote.shippingMethod() ?
-                quote.shippingMethod()['carrier_code'] + '_' + quote.shippingMethod()['method_code'] :
+                quote.shippingMethod()['carrier_code'] + '::' + quote.shippingMethod()['method_code'] :
                 null;
         }),
 
@@ -76,7 +76,7 @@ define([
          */
         selectShippingMethod: function (methodData) {
             selectShippingMethodAction(methodData);
-            checkoutData.setSelectedShippingRate(methodData['carrier_code'] + '_' + methodData['method_code']);
+            checkoutData.setSelectedShippingRate(methodData['carrier_code'] + '::' + methodData['method_code']);
 
             return true;
         }
diff --git a/app/code/Magento/Checkout/view/frontend/web/js/view/shipping.js b/app/code/Magento/Checkout/view/frontend/web/js/view/shipping.js
index 51ebb9dbf11d1..c2f5f62cb3d03 100644
--- a/app/code/Magento/Checkout/view/frontend/web/js/view/shipping.js
+++ b/app/code/Magento/Checkout/view/frontend/web/js/view/shipping.js
@@ -260,7 +260,7 @@ define([
         isLoading: shippingService.isLoading,
         isSelected: ko.computed(function () {
             return quote.shippingMethod() ?
-                quote.shippingMethod()['carrier_code'] + '_' + quote.shippingMethod()['method_code'] :
+                quote.shippingMethod()['carrier_code'] + '::' + quote.shippingMethod()['method_code'] :
                 null;
         }),
 
@@ -270,7 +270,7 @@ define([
          */
         selectShippingMethod: function (shippingMethod) {
             selectShippingMethodAction(shippingMethod);
-            checkoutData.setSelectedShippingRate(shippingMethod['carrier_code'] + '_' + shippingMethod['method_code']);
+            checkoutData.setSelectedShippingRate(shippingMethod['carrier_code'] + '::' + shippingMethod['method_code']);
 
             return true;
         },
diff --git a/app/code/Magento/Checkout/view/frontend/web/template/cart/shipping-rates.html b/app/code/Magento/Checkout/view/frontend/web/template/cart/shipping-rates.html
index f79a58053cba4..bf9cede5992bf 100644
--- a/app/code/Magento/Checkout/view/frontend/web/template/cart/shipping-rates.html
+++ b/app/code/Magento/Checkout/view/frontend/web/template/cart/shipping-rates.html
@@ -23,12 +23,12 @@
                                 click: $parents[1].selectShippingMethod,
                                 checked: $parents[1].selectedShippingMethod,
                                 attr: {
-                                        value: carrier_code + '_' + method_code,
-                                        id: 's_method_' + carrier_code + '_' + method_code,
+                                        value: carrier_code + '::' + method_code,
+                                        id: 's_method_' + carrier_code + '::' + method_code,
                                         disabled: false
                                         }
                                 "/>
-                    <label class="label" data-bind="attr: {for: 's_method_' + carrier_code + '_' + method_code}">
+                    <label class="label" data-bind="attr: {for: 's_method_' + carrier_code + '::' + method_code}">
                         <!-- ko text: $data.method_title --><!-- /ko -->
                         <each args="element.getRegion('price')" render=""></each>
                     </label>
diff --git a/app/code/Magento/Checkout/view/frontend/web/template/shipping-address/shipping-method-item.html b/app/code/Magento/Checkout/view/frontend/web/template/shipping-address/shipping-method-item.html
index 514c0c869178a..c0e3d90591006 100644
--- a/app/code/Magento/Checkout/view/frontend/web/template/shipping-address/shipping-method-item.html
+++ b/app/code/Magento/Checkout/view/frontend/web/template/shipping-address/shipping-method-item.html
@@ -11,8 +11,8 @@
                class="radio"
                ifnot="method.error_message"
                ko-checked="element.isSelected"
-               ko-value="method.carrier_code + '_' + method.method_code"
-               attr="'aria-labelledby': 'label_method_' + method.method_code + '_' + method.carrier_code + ' ' + 'label_carrier_' + method.method_code + '_' + method.carrier_code,
+               ko-value="method.carrier_code + '::' + method.method_code"
+               attr="'aria-labelledby': 'label_method_' + method.method_code + '::' + method.carrier_code + ' ' + 'label_carrier_' + method.method_code + '::' + method.carrier_code,
                     'checked': element.rates().length == 1 || element.isSelected" />
     </td>
     <!-- ko ifnot: (method.error_message) -->
@@ -21,10 +21,10 @@
     </td>
     <!-- /ko -->
     <td class="col col-method"
-        attr="'id': 'label_method_' + method.method_code + '_' + method.carrier_code"
+        attr="'id': 'label_method_' + method.method_code + '::' + method.carrier_code"
         text="method.method_title"></td>
     <td class="col col-carrier"
-        attr="'id': 'label_carrier_' + method.method_code + '_' + method.carrier_code"
+        attr="'id': 'label_carrier_' + method.method_code + '::' + method.carrier_code"
         text="method.carrier_title"></td>
 </tr>
 <tr class="row row-error"
diff --git a/app/code/Magento/Quote/Model/Quote/Address/Rate.php b/app/code/Magento/Quote/Model/Quote/Address/Rate.php
index 3f96be4bd25a4..6697126d7c18d 100644
--- a/app/code/Magento/Quote/Model/Quote/Address/Rate.php
+++ b/app/code/Magento/Quote/Model/Quote/Address/Rate.php
@@ -6,6 +6,7 @@
 namespace Magento\Quote\Model\Quote\Address;
 
 use Magento\Framework\Model\AbstractModel;
+use Magento\Sales\Model\Order;
 
 /**
  * @api
@@ -98,7 +99,7 @@ public function importShippingRate(\Magento\Quote\Model\Quote\Address\RateResult
             );
         } elseif ($rate instanceof \Magento\Quote\Model\Quote\Address\RateResult\Method) {
             $this->setCode(
-                $rate->getCarrier() . '_' . $rate->getMethod()
+                $rate->getCarrier() . Order::DELIMITER_SHIPPING_METHOD . $rate->getMethod()
             )->setCarrier(
                 $rate->getCarrier()
             )->setCarrierTitle(
diff --git a/app/code/Magento/Quote/Model/Quote/ShippingAssignment/ShippingProcessor.php b/app/code/Magento/Quote/Model/Quote/ShippingAssignment/ShippingProcessor.php
index ccad63ab41549..c8ed72514df62 100644
--- a/app/code/Magento/Quote/Model/Quote/ShippingAssignment/ShippingProcessor.php
+++ b/app/code/Magento/Quote/Model/Quote/ShippingAssignment/ShippingProcessor.php
@@ -10,6 +10,7 @@
 use Magento\Quote\Model\ShippingFactory;
 use Magento\Quote\Model\ShippingAddressManagement;
 use Magento\Quote\Model\ShippingMethodManagement;
+use Magento\Sales\Model\Order;
 
 class ShippingProcessor
 {
@@ -65,10 +66,9 @@ public function save(ShippingInterface $shipping, CartInterface $quote)
     {
         $this->shippingAddressManagement->assign($quote->getId(), $shipping->getAddress());
         if (!empty($shipping->getMethod()) && $quote->getItemsCount() > 0) {
-            $nameComponents = explode('_', $shipping->getMethod());
-            $carrierCode = array_shift($nameComponents);
-            // carrier method code can contains more one name component
-            $methodCode = implode('_', $nameComponents);
+            $nameComponents = explode(Order::DELIMITER_SHIPPING_METHOD, $shipping->getMethod());
+            $carrierCode = $nameComponents[0];
+            $methodCode = $nameComponents[1];
             $this->shippingMethodManagement->apply($quote->getId(), $carrierCode, $methodCode);
         }
     }
diff --git a/app/code/Magento/Quote/Model/ShippingMethodManagement.php b/app/code/Magento/Quote/Model/ShippingMethodManagement.php
index 8d851c71b6602..be657e09dc11a 100644
--- a/app/code/Magento/Quote/Model/ShippingMethodManagement.php
+++ b/app/code/Magento/Quote/Model/ShippingMethodManagement.php
@@ -25,6 +25,7 @@
 use Magento\Quote\Model\Quote\Address\Rate;
 use Magento\Quote\Model\Quote\TotalsCollector;
 use Magento\Quote\Model\ResourceModel\Quote\Address as QuoteAddressResource;
+use Magento\Sales\Model\Order;
 
 /**
  * Shipping method read service
@@ -224,7 +225,7 @@ public function apply($cartId, $carrierCode, $methodCode)
             $this->quoteAddressResource->delete($shippingAddress);
             throw new StateException(__('The shipping address is missing. Set the address and try again.'));
         }
-        $shippingMethod = $carrierCode . '_' . $methodCode;
+        $shippingMethod = $carrierCode . Order::DELIMITER_SHIPPING_METHOD . $methodCode;
         $shippingAddress->setShippingMethod($shippingMethod);
         $shippingAssignments = $quote->getExtensionAttributes()->getShippingAssignments();
         if (!empty($shippingAssignments)) {
diff --git a/app/code/Magento/Quote/Test/Unit/Model/ShippingMethodManagementTest.php b/app/code/Magento/Quote/Test/Unit/Model/ShippingMethodManagementTest.php
index 784bf04ddf7d3..a27a998b92fd7 100644
--- a/app/code/Magento/Quote/Test/Unit/Model/ShippingMethodManagementTest.php
+++ b/app/code/Magento/Quote/Test/Unit/Model/ShippingMethodManagementTest.php
@@ -456,7 +456,7 @@ public function testSetMethodWithCouldNotSaveException()
             ->willReturn($countryId);
         $this->shippingAddress->expects($this->once())
             ->method('setShippingMethod')
-            ->with($carrierCode . '_' . $methodCode);
+            ->with($carrierCode . Order::DELIMITER_SHIPPING_METHOD . $methodCode);
         $this->quote->expects($this->once())
             ->method('getExtensionAttributes')
             ->willReturn($this->extensionAttributesMock);
@@ -469,7 +469,7 @@ public function testSetMethodWithCouldNotSaveException()
 
         $this->shippingMock->expects($this->once())
             ->method('setMethod')
-            ->with($carrierCode . '_' . $methodCode);
+            ->with($carrierCode . Order::DELIMITER_SHIPPING_METHOD . $methodCode);
 
         $this->shippingAssignmentBuilder->expects($this->once())
             ->method('setShipping')
@@ -527,7 +527,7 @@ public function testSetMethod()
         $this->shippingAddress->expects($this->once())
             ->method('getCountryId')->willReturn($countryId);
         $this->shippingAddress->expects($this->once())
-            ->method('setShippingMethod')->with($carrierCode . '_' . $methodCode);
+            ->method('setShippingMethod')->with($carrierCode . Order::DELIMITER_SHIPPING_METHOD . $methodCode);
         $this->quote->expects($this->once())
             ->method('getExtensionAttributes')
             ->willReturn($this->extensionAttributesMock);
@@ -540,7 +540,7 @@ public function testSetMethod()
 
         $this->shippingMock->expects($this->once())
             ->method('setMethod')
-            ->with($carrierCode . '_' . $methodCode);
+            ->with($carrierCode . Order::DELIMITER_SHIPPING_METHOD . $methodCode);
 
         $this->shippingAssignmentBuilder->expects($this->once())
             ->method('setShipping')
diff --git a/app/code/Magento/Sales/Model/Order.php b/app/code/Magento/Sales/Model/Order.php
index f272a4638a170..126769864e98d 100644
--- a/app/code/Magento/Sales/Model/Order.php
+++ b/app/code/Magento/Sales/Model/Order.php
@@ -118,6 +118,11 @@ class Order extends AbstractModel implements EntityInterface, OrderInterface
     public const REPORT_DATE_TYPE_CREATED = 'created';
 
     public const REPORT_DATE_TYPE_UPDATED = 'updated';
+    
+    /**
+     * Delimiters
+     */
+    public const DELIMITER_SHIPPING_METHOD = '::';
 
     /**
      * @var string
@@ -1372,7 +1377,7 @@ public function getShippingMethod($asObject = false)
         if (!$asObject || !$shippingMethod) {
             return $shippingMethod;
         } else {
-            list($carrierCode, $method) = explode('_', $shippingMethod, 2);
+            list($carrierCode, $method) = preg_split("/".self::DELIMITER_SHIPPING_METHOD."/", $shippingMethod, 2);
             return new \Magento\Framework\DataObject(['carrier_code' => $carrierCode, 'method' => $method]);
         }
     }
diff --git a/app/code/Magento/Sales/Model/Service/PaymentFailuresService.php b/app/code/Magento/Sales/Model/Service/PaymentFailuresService.php
index a05ed2be9c82c..a2e6e1e9ea5a6 100644
--- a/app/code/Magento/Sales/Model/Service/PaymentFailuresService.php
+++ b/app/code/Magento/Sales/Model/Service/PaymentFailuresService.php
@@ -16,6 +16,7 @@
 use Magento\Quote\Api\CartRepositoryInterface;
 use Magento\Quote\Api\Data\CartInterface as Quote;
 use Magento\Sales\Api\PaymentFailuresInterface;
+use Magento\Sales\Model\Order;
 use Magento\Store\Model\ScopeInterface;
 use Magento\Store\Model\Store;
 use Psr\Log\LoggerInterface;
@@ -215,7 +216,7 @@ private function getShippingMethod(Quote $quote): string
         $shippingInfo = $quote->getShippingAddress()->getShippingMethod();
 
         if ($shippingInfo) {
-            $data = explode('_', $shippingInfo);
+            $data = preg_split("/".Order::DELIMITER_SHIPPING_METHOD."/", $shippingInfo);
             $shippingMethod = $data[0];
         }
 
diff --git a/app/code/Magento/Shipping/Model/Config/Source/Allmethods.php b/app/code/Magento/Shipping/Model/Config/Source/Allmethods.php
index f64c24856eba5..0cce062f92f67 100644
--- a/app/code/Magento/Shipping/Model/Config/Source/Allmethods.php
+++ b/app/code/Magento/Shipping/Model/Config/Source/Allmethods.php
@@ -5,6 +5,8 @@
  */
 namespace Magento\Shipping\Model\Config\Source;
 
+use Magento\Sales\Model\Order;
+
 /**
  * @inheritdoc
  */
@@ -66,7 +68,7 @@ public function toOptionArray($isActiveOnlyFlag = false)
                      continue;
                 }
                 $methods[$carrierCode]['value'][] = [
-                    'value' => $carrierCode . '_' . $methodCode,
+                    'value' => $carrierCode . Order::DELIMITER_SHIPPING_METHOD . $methodCode,
                     'label' => '[' . $carrierCode . '] ' . $methodTitle,
                 ];
             }