To manage iOS mobile devices, you should get an Apple Push Notification Service certificate (APNs certificate). You can receive the APNs certificate in Kaspersky CompanyAccount using the CSR signed by you:
Sign in to your account on Kaspersky CompanyAccount.
Click New request.
Select the Request an APNs certificate category.
Attach your file in CSR format by clicking Choose a CSR file. The maximum file size is 5 KB.
Click Send request.