diff --git a/payment-request/payment-response/retry-method-warnings-manual.https.html b/payment-request/payment-response/retry-method-warnings-manual.https.html
new file mode 100644
index 000000000000000..b68bf18309702c4
--- /dev/null
+++ b/payment-request/payment-response/retry-method-warnings-manual.https.html
@@ -0,0 +1,158 @@
+<!DOCTYPE html> <meta charset="utf-8" />
+<title>Warn when errorFields don't match request[[options]]</title>
+<link rel="help" href="https://github.com/w3c/payment-request/pull/807" />
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="helpers.js"></script>
+<script>
+  test(() => {
+    assert_true(
+      "retry" in PaymentResponse.prototype,
+      "retry must be in prototype"
+    );
+    assert_true(
+      PaymentResponse.prototype.retry instanceof Function,
+      "retry must be a function"
+    );
+  }, "PaymentResponse.prototype must have a retry() function (smoke test).");
+
+  const defaultOptions = {
+    requestPayerName: false,
+    requestPayerEmail: false,
+    requestPayerPhone: false,
+    requestShipping: false,
+  };
+  function testShowWarning(button, errorFields) {
+    button.disabled = true;
+    promise_test(async () => {
+      const { response } = await getPaymentRequestResponse(defaultOptions);
+      await response.retry(errorFields);
+      await response.complete();
+    });
+  }
+</script>
+<h2>Manual Tests - Please run in order!</h2>
+<p>
+  Please open the developer console. Each of the tests below should generate a
+  warning in the developer console.
+</p>
+<p>When presented with the payment sheet, hit pay twice.</p>
+<ol>
+  <li>
+    <button onclick="testShowWarning(this, {payer: {name: 'Dont show this'}});">
+      Show warning if `requestPayerName` if false, and `errorFields.payer.name` is
+      present.
+    </button>
+  </li>
+  <li>
+    <button
+      onclick="testShowWarning(this, {payer: {email: 'Dont show this'}});"
+    >
+      Show warning if `requestPayerEmail` if false, and `errorFields.payer.email`
+      is present.
+    </button>
+  </li>
+  <li>
+    <button
+      onclick="testShowWarning(this, {payer: {phone: 'Dont show this'}});"
+    >
+      Show warning if `requestPayerPhone` if false, and `errorFields.payer.phone`
+      is present.
+    </button>
+  </li>
+  <li>
+    <button onclick="testShowWarning(this, {shippingAddress: {}});">
+      Show warning if `requestShipping` if false, and
+      `errorFields.shippingAddress` member present.
+    </button>
+  </li>
+  <li>
+    <button
+      onclick="testShowWarning(this, {shippingAddress: {addressLine: 'Dont show this'}});"
+    >
+      Show warning if `requestShipping` if false, and
+      `errorFields.shippingAddress.addressLine` member present.
+    </button>
+  </li>
+  <li>
+    <button
+      onclick="testShowWarning(this, {shippingAddress: {city: 'Dont show this'}});"
+    >
+      Show warning if `requestShipping` if false, and
+      `errorFields.shippingAddress.city` member present.
+    </button>
+  </li>
+  <li>
+    <button
+      onclick="testShowWarning(this, {shippingAddress: {country: 'Dont show this'}});"
+    >
+      Show warning if `requestShipping` if false, and
+      `errorFields.shippingAddress.country` member present.
+    </button>
+  </li>
+  <li>
+    <button
+      onclick="testShowWarning(this, {shippingAddress: {dependentLocality: 'Dont show this'}});"
+    >
+      Show warning if `requestShipping` if false, and
+      `errorFields.shippingAddress.dependentLocality` member present.
+    </button>
+  </li>
+  <li>
+    <button
+      onclick="testShowWarning(this, {shippingAddress: {organization: 'Dont show this'}});"
+    >
+      Show warning if `requestShipping` if false, and
+      `errorFields.shippingAddress.organization` member present.
+    </button>
+  </li>
+  <li>
+    <button
+      onclick="testShowWarning(this, {shippingAddress: {phone: 'Dont show this'}});"
+    >
+      Show warning if `requestShipping` if false, and
+      `errorFields.shippingAddress.phone` member present.
+    </button>
+  </li>
+  <li>
+    <button
+      onclick="testShowWarning(this, {shippingAddress: {postalCode: 'Dont show this'}});"
+    >
+      Show warning if `requestShipping` if false, and
+      `errorFields.shippingAddress.postalCode` member present.
+    </button>
+  </li>
+  <li>
+    <button
+      onclick="testShowWarning(this, {shippingAddress: {recipient: 'Dont show this'}});"
+    >
+      Show warning if `requestShipping` if false, and
+      `errorFields.shippingAddress.recipient` member present.
+    </button>
+  </li>
+  <li>
+    <button
+      onclick="testShowWarning(this, {shippingAddress: {region: 'Dont show this'}});"
+    >
+      Show warning if `requestShipping` if false, and
+      `errorFields.shippingAddress.region` member present.
+    </button>
+  </li>
+  <li>
+    <button
+      onclick="testShowWarning(this, {shippingAddress: {regionCode: 'Dont show this'}});"
+    >
+      Show warning if `requestShipping` if false, and
+      `errorFields.shippingAddress.regionCode` member present.
+    </button>
+  </li>
+  <li>
+    <button
+      onclick="testShowWarning(this, {shippingAddress: {sortingCode: 'Dont show this'}});"
+    >
+      Show warning if `requestShipping` if false, and
+      `errorFields.shippingAddress.sortingCode` member present.
+    </button>
+  </li>
+  <li><button onclick="done()">Done!</button></li>
+</ol>
