requirements for provisioning an app on android 13

[Mediaking_1]

I have an app that I designed private for my company .... which gets permissions imei android ID block the use of factory restore unlock OEM unlock lock and unlock screen kiosk mode , and I install it by adb command and work perfect with all devices I have more than 170 devices made in this way and takes a lot of time , I would like to provision my app and placed as device owner through the QR the problem is that I do not know how to do it correctly try many things I saw on the internet , like for example the signed app get the sha256 from the apk and pass it to base64 make the json but I don't understand if I have to configure something else in the app for the provisioning I tried to scan a generated qr with everything correct and it didn't work it says contact your IT support for more information if someone can guide me it would be great, android 12+

a friend sent me some java and kt files for provisioning that worked for him, but for my app it doesn't work.

my app has no icon because I need to pass silently and already does but as I say the problem is that I do not know if I am missing a file or a specific configuration I am missing only this and I would be grateful if someone can help complete it or guide me, I saw options like google workspace but I could not modify the block screen to be customized, try with the api google managament android and also does not let you create the company by command then I'm desperate and do not know what to do

Thanks for read