Qualaroo lets you target error pages on your website, even a 404 error page. These pages can have varying URLs, making them tough to target.
Why add a survey to the 404 page:
Use the opportunity to collect feedback from error pages.
Get an insight into the users’ sentiments.
Since we can’t detect 404s automatically and the URL is not unique, we must use custom properties to target these pages.
Step 1: Find the HTML template for your 404 pages and add the following code immediately after your Qualaroo snippet:
Step 2: Create a new survey for your 404 pages with a simple URL targeting mysite.com/*
Step 3: Under targeting, scroll down to Target: Advanced. Select “When passed custom property is matched.”
Step 4: Enter the following in the field below:
is_404=1.

That is all about targeting a 404 page.
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