Hi,
If you are using HikaMarket 1.6.7, I recommand you to update to HikaMarket 1.7.2 in order to have the latest patch on the custom fields.
www.hikashop.com/support/documentation/1...arket-changelog.html
Even if you do not display the fields in the vendor edition, some fields are "required" and are treated as if during the save.
So you can unpublish the fields, mark them are not required or update to have the patchs.
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.