How to search custom record on the basis of custom field using soap webservices?

We are using customRecordSearchBasic to search a custom record of name "Item Country" using soap web services.

The request payload which we are using is:

<soap-env:Body>

    <search xmlns="urn:messages_2020_1.platform.webservices.netsuite.com">

            <searchRecord xmlns:q1="urn:common_2020_1.platform.webservices.netsuite.com" xmlns:q2="urn:core_2020_1.platform.webservices.netsuite.com" xsi:type="q1:CustomRecordSearchBasic">

                <q1:isInactive>

                    <searchValue xmlns="urn:core_2020_1.platform.webservices.netsuite.com">false</searchValue>

                </q1:isInactive>

                <q1:recType internalId="743"></q1:recType>

            </searchRecord>

        </search>

    </soap-env:Body>

This is the response which we are getting:

<soapenv:Body>

        <searchResponse xmlns="urn:messages_2020_1.platform.webservices.netsuite.com">

            <platformCore:searchResult xmlns:platformCore="urn:core_2020_1.platform.webservices.netsuite.com">