If the import of retral data (possible up to 60 days) is activated, it will take about two hours until the first documents will be available.
During daily business the FBA sales from the previous day (fulfilment by Amazon) are shown at the start of each day from 7:00 a.m.
The sales data for "Fulfilment by Merchant" (FBM) are being imported hourly from Amazon and are processed into customer invoices.
Please note, that Amazon only makes the data availble from 1,5 hours after the customer purchase.