diff --git a/src/layouts/mobile-details/mobile-details.spec.js b/src/layouts/mobile-details/mobile-details.spec.js
index a88dcab3d..a0c548a54 100644
--- a/src/layouts/mobile-details/mobile-details.spec.js
+++ b/src/layouts/mobile-details/mobile-details.spec.js
@@ -89,18 +89,53 @@ describe("mobile-details.vue", () => {
         // Assert
         expect(wrapper.vm.$router.navigateWithSaving).toHaveBeenCalled();
     });
-    test("arePagePrerequisitesValid should be true ", async () => {
-        //Arrange
-        const { wrapper } = setupMocks({
-            mixins: [mockMixin],
-            attachTo: document.body,
+    describe("arePagePrerequisitesValid", () => {
+        test("returns true when all prerequisites are valid", () => {
+            const { wrapper } = setupMocks({
+                mixins: [mockMixin],
+                attachTo: document.body,
+            });
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(true);
         });
 
-        //Act
-        let arePagePrerequisitesValid = wrapper.vm.arePagePrerequisitesValid();
+        test("returns falsy when service zip info is missing", () => {
+            store.getters.order.serviceLocation.zipCode = null;
+            const { wrapper } = setupMocks({
+                mixins: [mockMixin],
+                attachTo: document.body,
+            });
 
-        //Assert
-        expect(arePagePrerequisitesValid).toBe(true);
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBeFalsy();
+        });
+
+        test("returns false when appointment type is not mobile", () => {
+            store.getters.order.serviceLocation.appointmentType = "Inshop";
+            const { wrapper } = setupMocks({
+                mixins: [mockMixin],
+                attachTo: document.body,
+            });
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("returns false when scheduling info is missing", () => {
+            store.getters.order.schedule.date = null;
+            const { wrapper } = setupMocks({
+                mixins: [mockMixin],
+                attachTo: document.body,
+            });
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
     });
 
     test("if the back button is clicked, navigate back", async () => {
diff --git a/src/layouts/payment-adyen/payment-adyen.spec.js b/src/layouts/payment-adyen/payment-adyen.spec.js
new file mode 100644
index 000000000..e13b468c7
--- /dev/null
+++ b/src/layouts/payment-adyen/payment-adyen.spec.js
@@ -0,0 +1,201 @@
+import paymentAdyen from "@/layouts/payment-adyen/payment-adyen.vue";
+import { shallowMount } from "@vue/test-utils";
+import { getMountOptions } from "@/helpers/unit-test-helper";
+import store from "@/store";
+import { AppointmentTypeStrings } from "@/constants/schedule-constants";
+
+jest.mock("@/helpers/pricing-helper.js", () => ({
+    getAmountDue: jest.fn().mockReturnValue(100),
+}));
+
+jest.mock("@/helpers/cms-content-helper", () => ({
+    fetchCmsContentForPage: () => Promise.resolve("content"),
+}));
+
+jest.mock("@/helpers/layout-helper", () => ({
+    settleAllPromises: jest.fn().mockResolvedValue({ cmsContent: "content" }),
+}));
+
+jest.mock("@/helpers/loading-modal-helper", () => ({
+    showFmgLoadingModal: jest.fn(),
+}));
+
+jest.mock("@/helpers/heritage-integration/order-helper.js", () => ({
+    submitWorkOrder: jest.fn(),
+}));
+
+jest.mock("@/helpers/debug-log-helper.js", () => ({
+    debugLog: jest.fn(),
+}));
+
+// Component that skips Adyen initialization in mounted (only needed for arePagePrerequisitesValid tests)
+const PaymentAdyenTestComponent = {
+    ...paymentAdyen,
+    mounted() {
+        // Stub - skip initializeAdyen to avoid Adyen/API setup
+    },
+};
+
+const createValidOrder = () => ({
+    vehicle: {
+        year: "2020",
+        make: "acura",
+        model: "mdx",
+        carId: "dummyCarId",
+    },
+    serviceLocation: {
+        address: "123 Main St",
+        address2: "",
+        city: "Columbus",
+        state: "OH",
+        zipCode: "43235",
+        zipCodeCtu: "43235",
+        appointmentType: AppointmentTypeStrings.IN_SHOP,
+        provider: {
+            address: {
+                streetAddress: "456 Provider St",
+                city: "Columbus",
+                state: "OH",
+                zipCode: "43235",
+                zipCodeCtu: "43235",
+            },
+        },
+    },
+    customer: {
+        firstName: "John",
+        lastName: "Doe",
+        emailAddress: "john.doe@example.com",
+        phoneNumber: "555-555-5555",
+    },
+    payment: {
+        isInsurance: false,
+        isPia: true,
+        piaType: "CREDIT_CARD",
+        insuranceCoverage: {},
+    },
+    policy: {
+        currentDeductible: 0,
+        policyNumber: null,
+    },
+    schedule: {
+        date: "2024-01-15",
+        startTime: "09:00",
+        endTime: "10:00",
+        jobMinMinutes: "30",
+        jobMaxMinutes: "45",
+    },
+    workOrderNumber: "WO-123456",
+    referralCorrelationId: "ref-123",
+    referralSequenceNumber: 1,
+});
+
+describe("payment-adyen.vue", () => {
+    beforeEach(() => {
+        store.getters = {
+            order: createValidOrder(),
+            damage: {},
+            lineItems: { glassParts: [] },
+            payment: {},
+            policy: {},
+        };
+    });
+
+    afterEach(() => {
+        jest.clearAllMocks();
+    });
+
+    describe("arePagePrerequisitesValid", () => {
+        test("returns true when all prerequisites are valid", () => {
+            const wrapper = setupMocks({});
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(true);
+        });
+
+        test("returns false when service location info is missing", () => {
+            store.getters.order.serviceLocation.address = null;
+            store.getters.order.serviceLocation.provider.address.streetAddress = null;
+            const wrapper = setupMocks({});
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("returns false when insurance info is invalid", () => {
+            store.getters.order.payment.isInsurance = null;
+            const wrapper = setupMocks({});
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("returns false when scheduling info is missing", () => {
+            store.getters.order.schedule.date = null;
+            const wrapper = setupMocks({});
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("returns false when customer info is missing", () => {
+            store.getters.order.customer.firstName = null;
+            const wrapper = setupMocks({});
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("returns false when payment method info is invalid", () => {
+            store.getters.order.payment.isPia = null;
+            store.getters.order.payment.piaType = null;
+            const wrapper = setupMocks({});
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("returns true for mobile appointment type when address fields are present", () => {
+            store.getters.order.serviceLocation.appointmentType =
+                AppointmentTypeStrings.MOBILE;
+            store.getters.order.serviceLocation.address = "123 Mobile St";
+            store.getters.order.serviceLocation.city = "Columbus";
+            store.getters.order.serviceLocation.state = "OH";
+            store.getters.order.serviceLocation.zipCode = "43235";
+            const wrapper = setupMocks({});
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(true);
+        });
+    });
+});
+
+function setupMocks({ customMountOptions } = {}) {
+    const mountOptions = getMountOptions({
+        ...customMountOptions,
+        store,
+        route: { name: "payment-adyen" },
+        router: {
+            navigateWithSaving: jest.fn(),
+            navigateWithoutSaving: jest.fn(),
+            navigateWithPageData: jest.fn(),
+        },
+    });
+    mountOptions.global.mocks["navigationScenarios"] = {};
+    mountOptions.mixins = [
+        {
+            methods: {
+                getCmsContent: jest.fn(),
+                setCmsContent: jest.fn(),
+            },
+        },
+    ];
+
+    return shallowMount(PaymentAdyenTestComponent, mountOptions);
+}
diff --git a/src/layouts/payment-method/payment-method.spec.js b/src/layouts/payment-method/payment-method.spec.js
index 1bc123d3f..353316427 100644
--- a/src/layouts/payment-method/payment-method.spec.js
+++ b/src/layouts/payment-method/payment-method.spec.js
@@ -8,6 +8,7 @@ import store from "@/store";
 import { experimentSettings } from "@/constants/experiments";
 import { storeMutations } from "@/constants/store-mutations";
 import globalMethods from "@/global-methods";
+import { AppointmentTypeStrings } from "@/constants/schedule-constants";
 
 globalMethods.callHttpClient = jest.fn();
 
@@ -29,8 +30,64 @@ jest.mock("@/helpers/pricing-helper.js", () => ({
     getAmountDue: jest.fn(),
 }));
 
+jest.mock("@/helpers/debug-log-helper.js", () => ({
+    debugLog: jest.fn(),
+}));
+
 let piaDisabledFlag = false;
 
+const createValidOrderForPaymentMethod = () => ({
+    payment: {
+        isPia: false,
+        isInsurance: false,
+        insuranceCoverage: { isVerified: true },
+    },
+    lineItems: {
+        glassParts: [],
+        supportingItems: [],
+        vaps: [],
+        promos: [],
+    },
+    policy: {
+        currentDeductible: 123,
+        isNoComp: false,
+        isItac: false,
+    },
+    serviceLocation: {
+        appointmentType: AppointmentTypeStrings.MOBILE,
+        address: "123 Test Ave",
+        address2: "",
+        city: "Anytown",
+        state: "OH",
+        zipCode: "00000",
+        zipCodeCtu: "00000",
+        provider: {
+            address: {
+                streetAddress: "456 Provider St",
+                city: "Anytown",
+                state: "OH",
+                zipCode: "00000",
+                zipCodeCtu: "00000",
+            },
+        },
+    },
+    customer: {
+        firstName: "John",
+        lastName: "Doe",
+        emailAddress: "john@example.com",
+        phoneNumber: "555-555-5555",
+    },
+    schedule: {
+        date: "2024-01-15",
+        startTime: "09:00",
+        endTime: "10:00",
+        jobMinMinutes: "30",
+        jobMaxMinutes: "45",
+    },
+    vehicle: { year: 2020, make: "Toyota", model: "Camry", carId: "12345" },
+    damage: { isRepair: false },
+});
+
 describe("payment-method.vue", () => {
     describe("navigation", () => {
         test("if the back button is clicked, navigate back", async () => {
@@ -54,6 +111,53 @@ describe("payment-method.vue", () => {
             expect(wrapper.vm.$router.navigateWithoutSaving).toHaveBeenCalled();
         });
     });
+
+    describe("arePagePrerequisitesValid", () => {
+        test("returns true when all prerequisites are valid", () => {
+            const { wrapper } = setupMocks();
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(true);
+        });
+
+        test("returns false when service location info is missing", () => {
+            const { wrapper } = setupMocks();
+            store.getters.order.serviceLocation.address = null;
+            store.getters.order.serviceLocation.provider.address.streetAddress = null;
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("returns false when insurance info is invalid", () => {
+            const { wrapper } = setupMocks();
+            store.getters.order.payment.isInsurance = null;
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("returns false when scheduling info is missing", () => {
+            const { wrapper } = setupMocks();
+            store.getters.order.schedule.date = null;
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("returns false when customer info is missing", () => {
+            const { wrapper } = setupMocks();
+            store.getters.order.customer.firstName = null;
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+    });
 });
 
 function setupMocks() {
@@ -65,35 +169,7 @@ function setupMocks() {
             vaps: [],
             promos: [],
         },
-        order: {
-            payment: {
-                isPia: false,
-                insuranceCoverage: {
-                    isVerified: true,
-                },
-            },
-            lineItems: {
-                glassParts: [],
-                supportingItems: [],
-                vaps: [],
-                promos: [],
-            },
-            policy: {
-                currentDeductible: 123,
-                isNoComp: false,
-                isItac: false,
-            },
-            serviceLocation: {
-                appointmentType: "Mobile",
-                address: "123 Test Ave",
-                city: "Anytown",
-                state: "OH",
-                zipCode: "00000",
-                provider: { providerNumber: "0000567" },
-            },
-            vehicle: { year: 2020, make: "Toyota", model: "Camry", carId: "12345" },
-            damage: { isRepair: false },
-        },
+        order: createValidOrderForPaymentMethod(),
         applicationUser: {
             experiments: [],
         },
diff --git a/src/layouts/payment/payment.spec.js b/src/layouts/payment/payment.spec.js
index 1b36d0644..ea5341eb0 100644
--- a/src/layouts/payment/payment.spec.js
+++ b/src/layouts/payment/payment.spec.js
@@ -258,6 +258,42 @@ describe("payment.vue", () => {
             expect(result).toBe(true);
         });
 
+        test("Returns false when service location info is missing", () => {
+            const wrapper = setupMocks({});
+            store.getters.order.serviceLocation.provider.address.streetAddress = null;
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("Returns false when insurance info is invalid", () => {
+            const wrapper = setupMocks({});
+            store.getters.order.payment.isInsurance = null;
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("Returns false when scheduling info is missing", () => {
+            const wrapper = setupMocks({});
+            store.getters.order.schedule.date = null;
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("Returns false when customer info is missing", () => {
+            const wrapper = setupMocks({});
+            store.getters.order.customer.firstName = null;
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
         describe("Payment method cases", () => {
             test("Returns false if pia options are not valid", () => {
                 // Arrange
diff --git a/src/layouts/quote/quote.spec.js b/src/layouts/quote/quote.spec.js
index 60dd548ad..d9a36f11d 100644
--- a/src/layouts/quote/quote.spec.js
+++ b/src/layouts/quote/quote.spec.js
@@ -295,6 +295,47 @@ describe("quote.vue", () => {
 
         expect(arePagePrerequisitesValid).toBe(false);
     });
+
+    test("should fail arePagePrerequisitesValid when service zip info is missing", () => {
+        store.getters = {
+            order: {
+                lineItems: { glassParts: ["item"] },
+                serviceLocation: {
+                    zipCode: null,
+                    zipCodeCtu: "value",
+                },
+                damage: { isRepair: false },
+                payment: { insuranceCoverage: { isVerified: false } },
+                referralNumber: "1234567",
+            },
+        };
+        const { wrapper } = setupMocks({});
+
+        const result = wrapper.vm.arePagePrerequisitesValid();
+
+        expect(result).toBe(false);
+    });
+
+    test("should fail arePagePrerequisitesValid when insurance coverage is verified", () => {
+        store.getters = {
+            order: {
+                lineItems: { glassParts: ["item"] },
+                serviceLocation: {
+                    zipCode: "12345",
+                    zipCodeCtu: "value",
+                },
+                damage: { isRepair: false },
+                payment: { insuranceCoverage: { isVerified: true } },
+                referralNumber: "1234567",
+            },
+        };
+        const { wrapper } = setupMocks({});
+
+        const result = wrapper.vm.arePagePrerequisitesValid();
+
+        expect(result).toBe(false);
+    });
+
     test("should have non-null values for necessary data members after 'beforeRouteEnter'", async () => {
         //Arrange
         store.getters = {
diff --git a/src/layouts/schedule/schedule.spec.js b/src/layouts/schedule/schedule.spec.js
index 7d5cdcec1..9e7952fd0 100644
--- a/src/layouts/schedule/schedule.spec.js
+++ b/src/layouts/schedule/schedule.spec.js
@@ -57,6 +57,40 @@ jest.mock("@/helpers/heritage-integration/navigation-helper", () => ({
     navigateToHeritageFunnel: jest.fn(),
 }));
 
+jest.mock("@/helpers/debug-log-helper.js", () => ({
+    debugLog: jest.fn(),
+}));
+
+const createValidOrderForSchedule = () => ({
+    payment: {
+        isInsurance: false,
+        insuranceCoverage: { isVerified: false },
+    },
+    referralNumber: "",
+    serviceLocation: {
+        address: "",
+        address2: "",
+        city: "",
+        state: "",
+        zipCode: "00000",
+        zipCodeCtu: "000",
+        appointmentType: null,
+        provider: {},
+        isVehicleProtected: false,
+    },
+    schedule: {
+        date: "",
+        routeCode: "",
+        startTime: "",
+        endTime: "",
+        jobMinMinutes: null,
+        jobMaxMinutes: null,
+    },
+    policy: { isItac: false, isNoComp: false },
+    damage: { isRepair: true },
+    lineItems: { glassParts: [] },
+});
+
 describe("schedule.vue", () => {
     describe("navigation", () => {
         test("backButtonAction => non-insurance: navigateWithoutSaving called", () => {
@@ -149,8 +183,67 @@ describe("schedule.vue", () => {
             expect(wrapper.vm.$router.navigateWithSaving).not.toHaveBeenCalled();
         });
     });
+
+    describe("arePagePrerequisitesValid", () => {
+        test("returns true when all prerequisites are valid", () => {
+            const { wrapper } = setupMocksForArePagePrerequisitesValid();
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(true);
+        });
+
+        test("returns false when service zip info is missing", () => {
+            const { wrapper } = setupMocksForArePagePrerequisitesValid();
+            store.getters.order.serviceLocation.zipCode = null;
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("returns false when glass parts or repair info is missing", () => {
+            const { wrapper } = setupMocksForArePagePrerequisitesValid();
+            store.getters.order.damage.isRepair = false;
+            store.getters.order.lineItems.glassParts = [];
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("returns false when insurance info is invalid", () => {
+            const { wrapper } = setupMocksForArePagePrerequisitesValid();
+            store.getters.order.payment.isInsurance = null;
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+
+        test("returns false when supporting items missing for cash order", () => {
+            const { wrapper } = setupMocksForArePagePrerequisitesValid();
+            store.getters.order.payment.isInsurance = false;
+            store.getters.lineItems.supportingItems = null;
+
+            const result = wrapper.vm.arePagePrerequisitesValid();
+
+            expect(result).toBe(false);
+        });
+    });
 });
 
+function setupMocksForArePagePrerequisitesValid() {
+    store.getters = {
+        ...storeMocked.getters,
+        order: createValidOrderForSchedule(),
+        lineItems: {
+            supportingItems: [],
+        },
+    };
+    return setupMocks({ store });
+}
+
 function setupMocks(mountOptionsMockData = {}) {
     const route = { name: "schedule" };
     const defaultMountOptions = {