Hi,
See:
www.hikashop.com/support/support/documen...ig.html#features_sef
The canonical URL is fill by the product listing display you made.
If the canonical is not generated right due to wrong listing you are performing ; you need to clean the canonical and perform right product listings. You can also set the canonical URL manually.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.