async def _route_53_upsert_txt(logger, context, txt_contents, txt_domain):
    with logged(logger, 'Creating txt record %s %s', [txt_domain, txt_contents]):
        namespace = 'https://route53.amazonaws.com/doc/2013-04-01/'
        upsert_payload = (
            '<?xml version="1.0" encoding="UTF-8"?>'