We implemented the Mass Pay API to do mass payments from our app. When I went to create an NVP/SOAP API app to do this in our Prod environment, the form asked what APIs we planned on using. Sure enough, the Mass Pay API had (deprecated) next to it and told us we should be using the Payouts REST API.
As we were not live yet and still had time before go live, we bit the bullet and rewrote and retested the app to use the Payouts REST API. After creating the REST API app, I noticed Payouts was not 'ticked' for our Live environment, and has a "Contact us" button. So contacted PayPal to enable it, and after 2-3 months and half a dozen calls/emails and being told "it will be enabled in 24-72 hours", decided to contact merchant support.
Merchant support have now told us that the Payouts REST API is only available in the US (we are an Australian company and have an Aus PayPal account).
Yet their documentation clearly says Payouts is available in 150 countries? https://developer.paypal.com/docs/payouts/
I really don't know where to go from here - has anyone tried to do this? Any PayPal reps can shed some light on this?
So for whatever reason we decided to just try using the Payouts API in our live environment and it just worked. It's still unticked in the developer account, but it works in live.
Note: We did have to enable Mass Pay in the account.
I really don't understand, but glad we didn't have to re-write the app again!