SOLVED.If active of the manufacturers, the products do not add to cart

[pieroso]

Hello, I have joomla 3.6.5, virtuemart 3.0.18  multi-vendor configuration, if active of the manufacturers, the products do not add to cart, if I disable the manufacturers the problem does not go away! ??
Thank you in advance.

[Milbo]

What do you mean with "active of the manufacturers" and "if I disable the manufacturers"?

[pieroso]

I meant that I created manufacturers and then after that I noticed the problem I have disabled them

[pieroso]

I understand how the question arises: if I create a manufacturer with the same username of a vendor product to which I added the manufacturer becomes corrupted, you do not add more to your cart and is no longer recoverable, do not know why it happens so.
It 'a bug in virtuemart?
Perhaps the cause is not the manufacturer, because I've also noticed that if I change the vendor of a product, it happens that is not added in the cart even if the message "Product inserted correctly."
It just happens to me?

[Milbo]

When you use multivendor, it depends on your cart mode. https://docs.virtuemart.net/manual/general-concepts/211-multivendor.html

[pieroso]

SOLVED. In virtuemart multi-vendor configuration you must set in "by the logged in vendor"
Thanks for your attention.