WordPress at a glance
function is not described

_wp_privacy_resend_request() WP 4.9.6

Resend an existing request and return the result.

No Hooks.

Return

true/false/WP_Error. Returns true/false based on the success of sending the email, or a WP_Error object.

Usage

_wp_privacy_resend_request( $request_id );
$request_id(int) (required)
Request ID.

Code of wp privacy resend request: wp-admin/includes/user.php WP 5.2.2

<?php
function _wp_privacy_resend_request( $request_id ) {
	$request_id = absint( $request_id );
	$request    = get_post( $request_id );

	if ( ! $request || 'user_request' !== $request->post_type ) {
		return new WP_Error( 'privacy_request_error', __( 'Invalid request.' ) );
	}

	$result = wp_send_user_request( $request_id );

	if ( is_wp_error( $result ) ) {
		return $result;
	} elseif ( ! $result ) {
		return new WP_Error( 'privacy_request_error', __( 'Unable to initiate confirmation request.' ) );
	}

	return true;
}