I received API credentials but I need api application id to send Adaptive Accounts API Requests.
I used their sandbox app id: APP-80W284485P519543T.
now it's time to go live.
In order to go live, you need to register your application with PayPal to obtain an application ID.
When you submit your application to PayPal for review, the application is quickly scanned for the requests to PayPal operations. If no "advanced" operations are found, PayPal issues an AppID for the production servers at the time you submit the application.