Hi,
Every night I retrieve the previous days payments via the following API Call,
v3/merchants/mId/payments?offset=0&limit=1000&access_token=<token>&expand=serviceCharge&expand=refunds&filter=createdTime%3E%3D1576627200000&filter=createdTime%3C%3D1576713599999
Normally this would pick up refunds nicely, but for 2019-12-18 it seems to have missed one that I can see when logged into the dashboard running reports for the day in question.
The refund was placed on 18-Dec-2019 5:48 pm so I would expect it to be retrieved in the above request.