Redirecting from a deleted page

[Mike Hughes]

You could go down that route if you want to. I'm sure there's already enough detailed information on how to use a robots.txt file around that we don't need to repeat it all here.

[Mantra]

You could go down that route if you want to. I'm sure there's already enough detailed information on how to use a robots.txt file around that we don't need to repeat it all here.

As the indexing issue was flagged up by Google I used Google Community Search Console Help on how to set up and use a robots.txt file shown in the link below:
https://support.google.com/webmaster.../6062596?hl=en

This enabled me to set up a robots.txt file to disallow the 404.html from indexing using the code below:

# Soft 404 error : Block all but AdsBot crawlers
User-agent: * 
Disallow: /acatalog/404.html

The fix has now been validated by Google Search Console after uploading the robots.txt file and the coverage issue resolved.