"PaymentResponse.payerPhone">payerPhone</a> value, the user agent

SHOULD format the phone number to adhere to [[E.164]].

</li>

<li>If <var>isRetry</var> is true, resolve

<var>response</var>.<a>[[\retryPromise]]</a> with undefined.

Otherwise, resolve <var>request</var>.<a>[[\acceptPromise]]</a> with

<var>response</var>.

</li>

</ol>

</section>

<section>

<li>Let <var>request</var> be the <a>PaymentRequest</a> object that

the user is interacting with.

</li>

<li>If <var>request</var>.<a>[[\state]]</a> is not

"<a>interactive</a>", then terminate this algorithm and take no

further action. The <a>user agent</a> user interface SHOULD ensure

<li>Otherwise, reject <var>request</var>.<a>[[\acceptPromise]]</a>

with <var>error</var>.

</li>

</ol>

</section>

<section>

blocked. The user agent SHOULD provide the user with a means to abort

a payment request. Implementations MAY choose to implement a timeout

for pending updates if <var>detailsPromise</var> doesn't settle in a

</p>

<ol class="algorithm">

<li>Set <var>request</var>.<a>[[\updating]]</a> to true.