Canonical and/or SEO url:s for variants?

Shopware 6 (English) General Questions (EN)
1

Hey
What do you use and which one is „best“?
For my products with different colors, I have set Canonical url:s to „on“ and selected one of the colors. But checking the site with Ahref gives a lot of error about „Canonical URL has no incoming internal links“

The URL looks like this:
https://bytadiskbank.se/detail/018d36047047727ca296b1b28cd0fd39

The selected variant for canonical URL have this URL:
https://bytadiskbank.se/Dalago-45-F-Silgranit-8-faerger

  • Is it not bad for SEO having an URL like the first one with some random numbers?
  • Should I set the SEO Url for each variant? (To avoid the random numbers)
  • How does Canonical URL and SEO URL „works together“ in Shopware? Do I need to set both of them (for the main product)?

Sorry for the unstructured questions - but I’m so confused :crazy_face:

// Magnus