Although not, there is still a problem.
I added the settings for the warehouse
https://prnt.sc/uWx4fGvLvDqo and when the "Synchronize availability with suppliers and warehouses" check box is turned on - data on the availability of the product is inserted, if the product is in stock, everything is fine here.
But I noticed in several positions that if the product has a specified supplier, and the supplier does not have the product, but it is in stock - then the value of the product availability field is still "Not in stock"
The synchronization tick is
https://prnt.sc/zxX-Y1EJTYeWThe product is in stock
https://prnt.sc/rcTobGU9dOrbThere is a supplier, but the product is not available
https://prnt.sc/M5RJ6IxOHIrvWhat now prevents it from working correctly?