To prevent most search engine web crawlers from indexing your decision tree, Add the following script under admin and use it for any/all DTs you want.
To prevent most search engine web crawlers from indexing a page on your site, place the following meta tag into the <head> section of your decision tree:
<meta name="robots" content="noindex">
To prevent only Google web crawlers from indexing a page:
<meta name="googlebot" content="noindex">
How to check your meta tag:
Right click -> View Source -> Find “robots” -> you should see the line there or not
Please refer to this article for more information…