https://docs.gr4vy.com/connections/payments/braintree-venmo
- Setup braintree sandbox on Gravy sandbox
- Investigate payment flow
- Ensure PII received on Donor return
- Investigate recurring charge
- Investigate refund
- Investigate cancellation flows.
- Setup gravy braintree connection on Smashpig backend
- Setup Braintree venmo flow on DI
- Map Braintree venmo user as external user id in civi as we do now
- Verify IPN
- Verify Audit