We've encountered a scenario where payment providers require different base currencies configured for different websites in a multisite and as a result need to send different currency in Google analytics

Author: DominicWatts

app/code/Magento/GoogleAnalytics/Block/Ga.php

@@ -120,6 +120,7 @@ public function getOrdersTrackingCode()
         $result[] = "ga('require', 'ec', 'ec.js');";
 
         foreach ($collection as $order) {
+            $result[] = "ga('set', 'currencyCode', '" . $order->getBaseCurrencyCode() . "');";
             foreach ($order->getAllVisibleItems() as $item) {
                 $result[] = sprintf(
                     "ga('ec:addProduct', {
@@ -243,6 +244,7 @@ public function getOrdersTrackingData()
                 'tax' => $order->getBaseTaxAmount(),
                 'shipping' => $order->getBaseShippingAmount(),
             ];
+            $result['currency'] = $order->getBaseCurrencyCode();
         }
         return $result;
     }

app/code/Magento/GoogleAnalytics/Test/Unit/Block/GaTest.php

@@ -103,6 +103,7 @@ public function testOrderTrackingCode()
         $this->storeManagerMock->expects($this->once())->method('getStore')->willReturn($this->storeMock);
 
         $expectedCode = "ga('require', 'ec', 'ec.js');
+            ga('set', 'currencyCode', 'USD');
             ga('ec:addProduct', {
                                     'id': 'sku0',
                                     'name': 'testName0',
@@ -165,7 +166,8 @@ public function testOrderTrackingData()
                     'price' => 0.00,
                     'quantity' => 1
                 ]
-            ]
+            ],
+            'currency' => 'USD'
         ];
 
         $this->gaBlock->setOrderIds([1, 2]);
@@ -213,6 +215,7 @@ protected function createOrderMock($orderItemCount = 1)
         $orderMock->expects($this->once())->method('getBaseGrandTotal')->willReturn(10);
         $orderMock->expects($this->once())->method('getBaseTaxAmount')->willReturn(2);
         $orderMock->expects($this->once())->method('getBaseShippingAmount')->willReturn($orderItemCount);
+        $orderMock->expects($this->once())->method('getBaseCurrencyCode')->willReturn('USD');
         return $orderMock;
     }
 

app/code/Magento/GoogleAnalytics/view/frontend/web/js/google-analytics.js

@@ -57,6 +57,8 @@ define([
             if (config.ordersTrackingData) {
                 ga('require', 'ec', 'ec.js');
 
+                ga('set', 'currencyCode', config.ordersTrackingData.currency);
+
                 // Collect product data for GA
                 if (config.ordersTrackingData.products) {
                     $.each(config.ordersTrackingData.products, function (index, value) {