Override schema location without geotagging

functions.php

add_filter( 'wpjm_get_job_listing_structured_data', function( $data ) {
    if ( ! isset( $data['jobLocation'] ) ) {
        $data['jobLocation']            = [];
        $data['jobLocation']['@type']   = 'Place';
    }
	
	if ( is_string( $data['jobLocation']['address'] ) ) {
		$original_address                                 = $data['jobLocation']['address'];
		$data['jobLocation']['address']                   = [];
		$data['jobLocation']['address'] ['@type']         = 'PostalAddress';
		// Uncomment the line below if the string entered in the location field should be used for the streetAddress.
		// More info on the options you can use here: https://schema.org/PostalAddress
		// $data['jobLocation']['address'] ['streetAddress'] = $original_address;
	}
    $data['jobLocation']['address']['addressRegion']  = 'Valais';
    $data['jobLocation']['address']['addressCountry'] = 'Switzerland';

    return $data;
} );