How to activate while reinstall app in custom app in rest api

[vinodk]

Hello
I am creating custom app in php. when app uninstall 

recurring_application_charges billing will be cancel
when app reinstall how i activate that 

recurring_application_charges charge need approve again for sam billing plan or activate that old billing plan how i can do this with rest api in CURL with php

[garyrgilbert]

When someone uninstalls the app the recurring application charges are automatically cancelled, the ID that you had is no longer useful. If a merchant re-installs the app again you need to go through the entire subscription process again.

Cheers,

Gary