Hello Karthik,
Yes, please try this https://service.sap.com/sap/support/notes/1842588 to know the step-by-step procedure on how to install APNS certificate in Afaria.
Hope this helps. Once done please let us know the result.
If the question is answered now, please mark it as 'answered' so that the other customers with the same issue can find the answer here.
Kind Regards,
Sushmitha