I created a new order status and put the stock status reserved.
Therefore, the goods should be reserved in the warehouse. But not it. when I switch from this state to the state of processing, for example, the goods are reserved. When I switch the status back, the reservation for the goods is canceled, although I also have the stock status reserved here.
Can anyone advise please?
You give no versions!!!
Have you actually got an order for the products? If there is no outstanding order then AFAIK no product will be reserved.
VM version and screenshots would be a good start.
Jörgen @ Kreativ Fotografi