Cannot Sell App in Apple Store connect distribution

I am distributing my project as Apple Business Manager, but App Availability gives a Cannot Sell warning in my distribution country and I cannot show my application. My country is Türkiye. Why am I having such a distribution problem? Please I would like detailed information on this subject. Is this a software issue or an issue with my application? My application is currently in 1.0.1 Ready for Sale status and I am trying to distribute my application as Private — Available as a custom app on Apple Business Manager.