Thanks. We found that another Square employee answered in September 2026 that
app fees are not fully supported in the sandbox and the end-to-end flow can’t be
seen without moving to production
(Sandbox OAuth + app_fee_money: where should the application fee appear?).
The sandbox overview also states that Balance and application fee reporting
are not supported.
Could you confirm that APP_FEE_REVENUE payout entries are not generated in the
sandbox, and that the only way to verify the full flow is a small test in
production (checking ListPayoutEntries a few hours to a day after the payment)?