Steps to add Braintree as a source on Reveal Settlements.
API Key Creation on Braintree
Log in to your Braintree Dashboard and ensure that you have Account Admin User role access for your Braintree account by going to Team and clicking on your User.
Go to Settings > API Keys and generate a new API key if not already created.
Now copy the Private Key and Public Key from API Keys table.
From Client-side Encryption keys section, Copy your Merchant ID
Adding Source on Reveal dashboard
To pull in Braintree data to Optimize, you'll need to add your Braintree account as a new source to your Optimize account: