Attachment ID Errors

Hi @missabaya,

Please find our answers below:

1) If this attachment-sitemap.xml should be listing?
Yes, the attachment sitemap is there so that Google can crawl the attachment page URLs and see the 410 redirect created by the purge plugin. Any pages with a 410 redirect will be removed from the search index.
2) When can I remove the Search index purge plugin
Our recommendation is to remove the Purge plugin after 6 months. However, attachment pages are likely to be removed much faster than that from the search index.
3) Should i “Validate” all the attachment_id crawl errors?
You can, but as long as the attachment page sitemap is present and the URLs within it have a 410 redirect, the crawl error will be reported.
4) Is everything ok with my site, since I have no clue if everything in Yoast is working fine.
The aim of the Yoast SEO: Search Index Purge plugin is to purge attachment URLs from the search index by making all of your website’s attachment URLs return an HTTP 410 (content is gone) status. Google has approved of our method to solve this issue in the fastest way possible.

That being said, Google Search Console may notify you of an increase in crawl errors. This is to be expected when a large quantity of previously indexable URLs suddenly return 410 status codes. You do not have to do anything and Google will eventually drop the attachment URLs from the search results since they don’t exist anymore.