diff --git a/src/components/TestCards/TestCards.astro b/src/components/TestCards/TestCards.astro
new file mode 100644
index 00000000..83a9470e
--- /dev/null
+++ b/src/components/TestCards/TestCards.astro
@@ -0,0 +1,196 @@
+---
+import { getIconURL } from "@sumup-oss/icons";
+import { testCards } from "../../lib/testCards";
+
+const successCards = testCards.filter((card) => !card.error && !card.challenge);
+const challengeCards = testCards.filter((card) => card.challenge);
+const errorCards = testCards.filter((card) => card.error);
+
+const sections = [
+  { title: "Successful Transactions", cards: successCards },
+  { title: "3DS Challenge Flows", cards: challengeCards },
+  { title: "Error Cases", cards: errorCards },
+];
+---
+
+<div class="test-cards">
+  {
+    sections.map(({ title, cards }) => (
+      <div class="test-cards-section">
+        <h2 class="test-cards-section-title">{title}</h2>
+        <div class="test-cards-list">
+          {cards.map((card) => (
+            <div class="test-card">
+              <div class="test-card-header">
+                <img
+                  src={getIconURL(card.brand, "24")}
+                  alt={card.brand}
+                  class="test-card-brand-icon"
+                />
+                <span class="test-card-name">{card.name}</span>
+                {card.returnsMethodData && (
+                  <span class="test-card-badge">Method Data</span>
+                )}
+              </div>
+              <div class="test-card-number-wrapper">
+                <code class="test-card-number">{card.number}</code>
+                <button
+                  class="test-card-copy"
+                  data-number={card.number.replace(/\s/g, "")}
+                  aria-label="Copy card number"
+                >
+                  📋
+                </button>
+              </div>
+              <p class="test-card-description">{card.description}</p>
+            </div>
+          ))}
+        </div>
+      </div>
+    ))
+  }
+</div>
+
+<style>
+  .test-cards {
+    display: flex;
+    flex-direction: column;
+    gap: 3rem;
+    margin: 2rem 0;
+  }
+
+  .test-cards-section {
+    display: flex;
+    flex-direction: column;
+    gap: 1.5rem;
+  }
+
+  .test-cards-section-title {
+    font-size: 1.75rem;
+    font-weight: 600;
+    margin: 0;
+    padding-bottom: 0.5rem;
+    border-bottom: 2px solid var(--sl-color-gray-5);
+  }
+
+  .test-cards-list {
+    display: grid;
+    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
+    gap: 1rem;
+  }
+
+  .test-card {
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+    padding: 1rem;
+    border: 1px solid var(--sl-color-gray-5);
+    border-radius: 0.5rem;
+    background-color: var(--sl-color-bg-nav);
+    transition: border-color 0.2s ease;
+  }
+
+  .test-card:hover {
+    border-color: var(--sl-color-text-accent);
+  }
+
+  .test-card-header {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+  }
+
+  .test-card-brand-icon {
+    width: 1.5rem;
+    height: 1.5rem;
+    object-fit: contain;
+    flex-shrink: 0;
+  }
+
+  .test-card-name {
+    font-weight: 600;
+    font-size: 0.9rem;
+    color: var(--sl-color-white);
+    flex: 1;
+  }
+
+  .test-card-badge {
+    font-size: 0.75rem;
+    padding: 0.25rem 0.5rem;
+    border-radius: 0.25rem;
+    background-color: var(--sl-color-gray-6);
+    color: var(--sl-color-gray-2);
+    white-space: nowrap;
+  }
+
+  .test-card-number-wrapper {
+    position: relative;
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+  }
+
+  .test-card-number {
+    font-family: var(--sl-font-mono);
+    font-size: 1rem;
+    font-weight: 600;
+    padding: 0.5rem;
+    background-color: var(--sl-color-gray-7);
+    border-radius: 0.25rem;
+    letter-spacing: 0.05em;
+    user-select: all;
+    flex: 1;
+  }
+
+  .test-card-copy {
+    position: absolute;
+    right: 0.5rem;
+    padding: 0.25rem 0.5rem;
+    background-color: var(--sl-color-gray-6);
+    border: 1px solid var(--sl-color-gray-5);
+    border-radius: 0.25rem;
+    cursor: pointer;
+    font-size: 0.875rem;
+    opacity: 0;
+    transition: opacity 0.2s ease;
+  }
+
+  .test-card-number-wrapper:hover .test-card-copy {
+    opacity: 1;
+  }
+
+  .test-card-copy:hover {
+    background-color: var(--sl-color-gray-5);
+  }
+
+  .test-card-description {
+    font-size: 0.875rem;
+    color: var(--sl-color-gray-2);
+    margin: 0;
+    line-height: 1.5;
+  }
+</style>
+
+<script>
+  document.addEventListener("DOMContentLoaded", () => {
+    const copyButtons = document.querySelectorAll(".test-card-copy");
+
+    copyButtons.forEach((button) => {
+      button.addEventListener("click", async () => {
+        const number = button.getAttribute("data-number");
+        if (!number) return;
+
+        try {
+          await navigator.clipboard.writeText(number);
+          const originalText = button.textContent;
+          button.textContent = "✓";
+          setTimeout(() => {
+            button.textContent = originalText;
+          }, 2000);
+        } catch (err) {
+          console.error("Failed to copy:", err);
+        }
+      });
+    });
+  });
+</script>
diff --git a/src/components/TestCards/index.ts b/src/components/TestCards/index.ts
new file mode 100644
index 00000000..3884cdfb
--- /dev/null
+++ b/src/components/TestCards/index.ts
@@ -0,0 +1 @@
+export { default as TestCards } from "./TestCards.astro";
diff --git a/src/content/docs/online-payments/testing.mdx b/src/content/docs/online-payments/testing.mdx
new file mode 100644
index 00000000..5a9c66d3
--- /dev/null
+++ b/src/content/docs/online-payments/testing.mdx
@@ -0,0 +1,83 @@
+---
+title: Testing
+description: Learn how to test online payments using sandbox accounts and test cards with different 3D Secure flows.
+sidebar:
+  order: 6
+---
+
+import { Aside, Steps } from '@astrojs/starlight/components';
+import { TestCards } from '@components/TestCards';
+
+Testing your online payments integration is crucial before going live. SumUp provides sandbox test accounts and a comprehensive set of test cards to simulate various payment scenarios, including different 3D Secure authentication flows.
+
+## Setting up a Test Account
+
+Before you can test online payments, you need to create a test account in the SumUp Dashboard.
+
+<Steps>
+
+1. Log in to your SumUp account.
+
+2. Open the drop-down menu between Support and your user panel.
+
+3. Select **Test Account**. Your merchant account is now switched to test mode.
+
+</Steps>
+
+<Aside type="note">
+Test accounts **do not** process transactions with real funds. All transactions are simulated for testing purposes only.
+</Aside>
+
+## Test Card Details
+
+When testing with card payments, you can use the following common details for all test cards:
+
+- **CVV**: Any 3 digits (e.g., `123`)
+- **Expiry Date**: Any future date (e.g., `12/25`)
+- **Cardholder Name**: Any name
+
+## Testing Failed Transactions
+
+To test failed transactions with your test account, create a checkout with an amount of `11` in any currency. This will always result in a failed transaction, allowing you to test your error handling logic.
+
+<Aside type="tip">
+Example: A checkout amount of `11.00 EUR` or `11.00 USD` will always fail.
+</Aside>
+
+## Test Cards by Card Scheme
+
+Use the test cards below to simulate different payment scenarios and 3D Secure flows. Each card is designed to trigger specific authentication behaviors:
+
+- **Frictionless**: Authentication completes without user interaction
+- **Challenge**: Requires user authentication (e.g., entering a code or using biometrics)
+- **Error**: Simulates various error conditions
+
+<TestCards />
+
+## Understanding 3D Secure Test Responses
+
+When testing with these cards, you'll encounter different 3D Secure transaction statuses:
+
+- **TransactionStatus=Y**: Authentication successful
+- **TransactionStatus=A**: Authentication attempted (issuer or cardholder not participating)
+- **TransactionStatus=N**: Authentication failed
+- **TransactionStatus=U**: Technical error during authentication
+
+The **ECI (Electronic Commerce Indicator)** values vary by card scheme:
+- **ECI=05**: Full authentication (Visa, Amex, Discover, JCB)
+- **ECI=02**: Full authentication (Mastercard, Maestro)
+- **ECI=06**: Attempted authentication (Visa, Amex, Discover, JCB)
+- **ECI=01**: Attempted authentication (Mastercard, Maestro)
+
+## Next Steps
+
+Once you've thoroughly tested your integration with sandbox accounts and test cards:
+
+1. Switch back to your live account in the Dashboard
+2. Ensure your production credentials are properly configured
+3. Process a small real transaction to verify everything works as expected
+4. Monitor your first transactions closely to ensure proper payment processing
+
+<Aside type="caution">
+Remember to switch from your test account to your live account before accepting real payments from customers.
+</Aside>
diff --git a/src/lib/testCards.tsx b/src/lib/testCards.tsx
new file mode 100644
index 00000000..12c4c43a
--- /dev/null
+++ b/src/lib/testCards.tsx
@@ -0,0 +1,632 @@
+export const testCards: {
+  brand:
+    | "visa"
+    | "mastercard"
+    | "maestro"
+    | "american_express"
+    | "discover"
+    | "jcb";
+  number: string;
+  name: string;
+  description: string;
+  returnsMethodData: boolean;
+  error: boolean;
+  challenge: boolean;
+}[] = [
+  // Successful transactions
+  {
+    brand: "visa",
+    number: "4200 0000 0000 0091",
+    name: "Successful Frictionless",
+    description:
+      "Successful frictionless authentication (ECI=05, TransactionStatus=Y)",
+    returnsMethodData: true,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "visa",
+    number: "4200 0000 0000 0109",
+    name: "Frictionless Attempt",
+    description: "Attempt (ECI=06, TransactionStatus=A)",
+    returnsMethodData: true,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "visa",
+    number: "4200 0000 0000 0026",
+    name: "Successful Frictionless",
+    description:
+      "Successful frictionless authentication (ECI=05, TransactionStatus=Y)",
+    returnsMethodData: false,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "visa",
+    number: "4200 0000 0000 0059",
+    name: "Frictionless Attempt",
+    description: "Attempt (ECI=06, TransactionStatus=A)",
+    returnsMethodData: false,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "mastercard",
+    number: "5200 0000 0000 0007",
+    name: "Successful Frictionless",
+    description:
+      "Successful frictionless authentication (ECI=05, ECI=02 for Mastercard, TransactionStatus=Y)",
+    returnsMethodData: true,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "mastercard",
+    number: "5200 0000 0000 0023",
+    name: "Frictionless Attempt",
+    description: "Attempt (ECI=06, ECI=01 for Mastercard, TransactionStatus=A)",
+    returnsMethodData: true,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "mastercard",
+    number: "5200 0000 0000 0056",
+    name: "Successful Frictionless",
+    description:
+      "Successful frictionless authentication (ECI=05, ECI=02 for Mastercard, TransactionStatus=Y)",
+    returnsMethodData: false,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "mastercard",
+    number: "5200 0000 0000 0106",
+    name: "Frictionless Attempt",
+    description: "Attempt (ECI=06, ECI=01 for Mastercard, TransactionStatus=A)",
+    returnsMethodData: false,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "maestro",
+    number: "6761 3010 0099 3772",
+    name: "Successful Frictionless",
+    description:
+      "Successful frictionless authentication (ECI=05, ECI=02 for Mastercard, TransactionStatus=Y)",
+    returnsMethodData: true,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "maestro",
+    number: "6706 9811 1111 1113",
+    name: "Frictionless Attempt",
+    description: "Attempt (ECI=06, ECI=01 for Mastercard, TransactionStatus=A)",
+    returnsMethodData: true,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "maestro",
+    number: "6799 8510 0000 0032",
+    name: "Successful Frictionless",
+    description:
+      "Successful frictionless authentication (ECI=05, ECI=02 for Mastercard, TransactionStatus=Y)",
+    returnsMethodData: true,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "maestro",
+    number: "6007 9301 2345 6780",
+    name: "Frictionless Attempt",
+    description: "Attempt (ECI=06, ECI=01 for Mastercard, TransactionStatus=A)",
+    returnsMethodData: false,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "american_express",
+    number: "3745 0026 2001 008",
+    name: "Successful Frictionless",
+    description:
+      "Successful frictionless authentication (ECI=05, ECI=02 for Mastercard, TransactionStatus=Y)",
+    returnsMethodData: true,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "american_express",
+    number: "3772 7708 1382 243",
+    name: "Frictionless Attempt",
+    description: "Attempt (ECI=06, ECI=01 for Mastercard, TransactionStatus=A)",
+    returnsMethodData: true,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "american_express",
+    number: "3759 8700 0000 062",
+    name: "Successful Frictionless",
+    description:
+      "Successful frictionless authentication (ECI=05, ECI=02 for Mastercard, TransactionStatus=Y)",
+    returnsMethodData: false,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "american_express",
+    number: "3739 5319 2351 004",
+    name: "Frictionless Attempt",
+    description: "Attempt (ECI=06, ECI=01 for Mastercard, TransactionStatus=A)",
+    returnsMethodData: false,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "discover",
+    number: "3617 7580 6770 72",
+    name: "Successful Frictionless",
+    description:
+      "Successful frictionless authentication (ECI=05, ECI=02 for Mastercard, TransactionStatus=Y)",
+    returnsMethodData: true,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "discover",
+    number: "6011 0004 0000 1008",
+    name: "Frictionless Attempt",
+    description: "Attempt (ECI=06, ECI=01 for Mastercard, TransactionStatus=A)",
+    returnsMethodData: true,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "discover",
+    number: "6011 0100 0000 0003",
+    name: "Successful Frictionless",
+    description:
+      "Successful frictionless authentication (ECI=05, ECI=02 for Mastercard, TransactionStatus=Y)",
+    returnsMethodData: false,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "discover",
+    number: "6011 0009 9009 9818",
+    name: "Frictionless Attempt",
+    description: "Attempt (ECI=06, ECI=01 for Mastercard, TransactionStatus=A)",
+    returnsMethodData: false,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "jcb",
+    number: "3530 1113 3330 0000",
+    name: "Successful Frictionless",
+    description:
+      "Successful frictionless authentication (ECI=05, ECI=02 for Mastercard, TransactionStatus=Y)",
+    returnsMethodData: true,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "jcb",
+    number: "3566 0020 2036 0505",
+    name: "Frictionless Attempt",
+    description: "Attempt (ECI=06, ECI=01 for Mastercard, TransactionStatus=A)",
+    returnsMethodData: true,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "jcb",
+    number: "3569 9900 1227 8361",
+    name: "Successful Frictionless",
+    description:
+      "Successful frictionless authentication (ECI=05, ECI=02 for Mastercard, TransactionStatus=Y)",
+    returnsMethodData: false,
+    error: false,
+    challenge: false,
+  },
+  {
+    brand: "jcb",
+    number: "3569 9900 1227 8353",
+    name: "Frictionless Attempt",
+    description: "Attempt (ECI=06, ECI=01 for Mastercard, TransactionStatus=A)",
+    returnsMethodData: false,
+    error: false,
+    challenge: false,
+  },
+
+  // 3DS Challenge flows
+  {
+    brand: "visa",
+    number: "4200 0000 0000 0042",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: true,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "visa",
+    number: "4200 0000 0000 0067",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: true,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "visa",
+    number: "4200 0000 0000 0018",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: false,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "visa",
+    number: "4200 0000 0000 0075",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: false,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "mastercard",
+    number: "5200 0000 0000 0015",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: true,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "mastercard",
+    number: "5200 0000 0000 0049",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: true,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "mastercard",
+    number: "5200 0000 0000 0064",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: false,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "mastercard",
+    number: "5200 0000 0000 0072",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: false,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "maestro",
+    number: "6799 9989 0000 0060 018",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: true,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "maestro",
+    number: "6773 6700 0911 4879",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: true,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "maestro",
+    number: "6703 4200 5545 6501 5",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: false,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "maestro",
+    number: "6759 8888 8888 8888",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: false,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "american_express",
+    number: "3434 3434 3434 343",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: true,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "american_express",
+    number: "3759 8700 0000 021",
+    name: "Challenge Flow",
+    description: "Card that requires 3D D Secure authentication with challenge",
+    returnsMethodData: true,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "american_express",
+    number: "3759 8700 0169 867",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: false,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "american_express",
+    number: "3714 4963 5398 431",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: false,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "discover",
+    number: "3625 9600 0000 04",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: true,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "discover",
+    number: "6011 2087 0111 7775",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: true,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "discover",
+    number: "6559 9065 5990 6557",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: false,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "discover",
+    number: "3645 8811 1111 19",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: false,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "jcb",
+    number: "3566 0023 4543 2153",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: true,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "jcb",
+    number: "3569 9900 1009 5916",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: true,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "jcb",
+    number: "3569 9900 1230 0876",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: false,
+    error: false,
+    challenge: true,
+  },
+  {
+    brand: "jcb",
+    number: "3569 9900 1230 0884",
+    name: "Challenge Flow",
+    description: "Card that requires 3D Secure authentication with challenge",
+    returnsMethodData: false,
+    error: false,
+    challenge: true,
+  },
+
+  // Error cases
+  {
+    brand: "visa",
+    number: "4012 0010 3746 1114",
+    name: "Technical Error",
+    description: "Technical Error (no ECI, TransactionStatus=U)",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "visa",
+    number: "4012 0010 3714 1112",
+    name: "User Not Enrolled",
+    description: "User not enrolled (ECI=06, TransactionStatus=N)",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "visa",
+    number: "4532 4970 8877 1651",
+    name: "Card Not Participating",
+    description: "Card not participating in 3D Secure",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "mastercard",
+    number: "5434 5800 0000 0006",
+    name: "Technical Error",
+    description: "Technical Error (no ECI, TransactionStatus=U)",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "mastercard",
+    number: "5457 3500 7654 3210",
+    name: "User Not Enrolled",
+    description:
+      "User not enrolled (ECI=06, ECI=01 for Mastercard, TransactionStatus=N)",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "mastercard",
+    number: "5497 2608 4731 6287",
+    name: "Card Not Participating",
+    description: "Card not participating in 3D Secure",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "maestro",
+    number: "6761 3010 0094 1201",
+    name: "Technical Error",
+    description: "Technical Error (no ECI, TransactionStatus=U)",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "maestro",
+    number: "6761 3010 0094 6341",
+    name: "User Not Enrolled",
+    description:
+      "User not enrolled (ECI=06, ECI=01 for Mastercard, TransactionStatus=N)",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "maestro",
+    number: "6761 2577 0783 6567",
+    name: "Card Not Participating",
+    description: "Card not participating in 3D Secure",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "american_express",
+    number: "3759 8700 0169 875",
+    name: "Technical Error",
+    description: "Technical Error (no ECI, TransactionStatus=U)",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "american_express",
+    number: "3759 8700 0169 883",
+    name: "User Not Enrolled",
+    description:
+      "User not enrolled (ECI=06, ECI=01 for Mastercard, TransactionStatus=N)",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "american_express",
+    number: "3439 2309 2050 144",
+    name: "Card Not Participating",
+    description: "Card not participating in 3D Secure",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "discover",
+    number: "6510 0000 0000 1248",
+    name: "Technical Error",
+    description: "Technical Error (no ECI, TransactionStatus=U)",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "discover",
+    number: "6011 0255 0026 5831",
+    name: "User Not Enrolled",
+    description:
+      "User not enrolled (ECI=06, ECI=01 for Mastercard, TransactionStatus=N)",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "discover",
+    number: "6011 4207 1174 6440",
+    name: "Card Not Participating",
+    description: "Card not participating in 3D Secure",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "jcb",
+    number: "3566 0077 7001 7510",
+    name: "Technical Error",
+    description: "Technical Error (no ECI, TransactionStatus=U)",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "jcb",
+    number: "3569 9900 1229 1497",
+    name: "User Not Enrolled",
+    description:
+      "User not enrolled (ECI=06, ECI=01 for Mastercard, TransactionStatus=N)",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+  {
+    brand: "jcb",
+    number: "3096 0233 6337 9943",
+    name: "Card Not Participating",
+    description: "Card not participating in 3D Secure",
+    returnsMethodData: false,
+    error: true,
+    challenge: false,
+  },
+];