flectra/addons/payment_payumoney/views/payment_payumoney_templates.xml

<?xml version="1.0" encoding="utf-8"?>
<flectra>
    <template id="payumoney_form">
        <input type="hidden" name="data_set" t-att-data-action-url="tx_url" data-remove-me=""/>
        <input type="hidden" name="key" t-att-value='key' />
        <input type="hidden" name="txnid" t-att-value='txnid' />
        <input type="hidden" name="amount" t-att-value='amount' />
        <input type="hidden" name="productinfo" t-att-value='productinfo' />
        <input type="hidden" name="firstname" t-att-value='firstname' />
        <input type="hidden" name="email" t-att-value='email' />
        <input type="hidden" name="phone" t-att-value='phone'/>
        <input type="hidden" name="service_provider" t-att-value='service_provider' />
        <input type="hidden" name="hash" t-att-value='hash' />
        <input type="hidden" name="surl" t-att-value='surl' />
        <input type="hidden" name="furl" t-att-value='furl' />
        <input type="hidden" name="curl" t-att-value='curl' />
        <input type="hidden" name="udf1" t-att-value='udf1'/>
    </template>
</flectra>