--- a/browser/components/payments/res/debugging.js
+++ b/browser/components/payments/res/debugging.js
@@ -37,16 +37,17 @@ let REQUEST_1 = {
       {
         label: "Square",
         amount: {
           currency: "USD",
           value: "5",
         },
       },
     ],
+    shippingAddressErrors: {},
     shippingOptions: [
       {
         id: "123",
         label: "Fast",
         amount: {
           currency: "USD",
           value: 10,
         },
@@ -102,16 +103,17 @@ let REQUEST_2 = {
         label: "Tax",
         type: "tax",
         amount: {
           currency: "USD",
           value: "1.50",
         },
       },
     ],
+    shippingAddressErrors: {},
     shippingOptions: [
       {
         id: "123",
         label: "Fast (default)",
         amount: {
           currency: "USD",
           value: 10,
         },

--- a/browser/components/payments/res/mixins/PaymentStateSubscriberMixin.js
+++ b/browser/components/payments/res/mixins/PaymentStateSubscriberMixin.js
@@ -35,16 +35,17 @@ export let requestStore = new PaymentsSt
     tabId: null,
     topLevelPrincipal: {URI: {displayHost: null}},
     requestId: null,
     paymentMethods: [],
     paymentDetails: {
       id: null,
       totalItem: {label: null, amount: {currency: null, value: 0}},
       displayItems: [],
+      shippingAddressErrors: {},
       shippingOptions: [],
       modifiers: null,
       error: "",
     },
     paymentOptions: {
       requestPayerName: false,
       requestPayerEmail: false,
       requestPayerPhone: false,