I have an online shop. Google search console is warning that a URL is "Indexed although blocked by robots.txt". When I use Google's robots.txt tool, I see that the page is blocked by this rule.
I am building my website with OXID and when I asked in their forums (in German), say that all URLs with
*?cur=x will be excluded to avoid duplicate content. To solve this problem, I should add a few parameters to Google Search Console URL-Parameter tool rather than changing robots.txt.
Which URL parameter should be added here?