I've been going around in circles with the paypal documentation. How do I get a paypal app id for the paypal sandbox using the Adaptive Payment API? I already have a username/password/signature for the sandbox.
Adaptive Payments has been deprecated. Please see the comment from Lenny Markus (current Director of Engineering at PayPal) on the answer below.
Adaptive Payments has been deprecated. Please see the comment from Lenny Markus (current Director of Engineering at PayPal) below.
If you're testing Adaptive API calls, use the static Sandbox AppID: