How to create a DiscountCode which will not be added to the stores owners discount list through API?

6 0 1

Hi,
How to create a discount code which will be temporary and will not be added to the store owners discount list?

Currently I can create a discount code through PriceRule and DiscountCode API but it always add's to the store owners discount list, which is what I do not want.

Apps like ReConvert have done it, but currently, I do not find any resources on how to do it.

The second question would be how to redirect the customer to the cart page and automatically fill the cart details?

Apps like ReConvert have done it also.

Any help will be appreciated.