Quantity verification through vendor before payment through gateway

Hi, if any vendor wants to confirm order after verification of stock availability before customer’s payment

Any possibility in CS cart multivendor plateform

I am afraid, it is not possible out of the box. You can check marketplace for 3rd party solutions. E.g.


Using this one add-on, you will be able to separate payment methods without payment processors from payment methods that use realtime payment processor, depending on order’s status: