We are building a local business classified website which has about 6000 unique listingsunder huge number of categories and sub-categories.
For each listing there is a details page in which we have included a link from where the users can download pdf containing all the details and information regarding that particular listing.
When the users click that button/link for download request. the pdf file is downloaded in the same page without opening a download link in the new tab.
What we saw on webmaster shooked us. the server is returning a 503 server error pointing all the pdf links of each listings. You can find the attached image of the crawl errors in our webmaster dashboard.
Help us in resolving this issue..
Looking forward for you help.