Two screens can show different totals because they answer different questions.
1. Identify each measure
Read the heading: sales, cash received, outstanding, overdue, income, and profit are different measures.
2. Align the filters
Compare the selected business, date range or as-of date, currency, status, and Amounts In settings on both views.
3. Check the dates behind a record
An invoice can be issued in one month and paid in another. A document report and a cash report can therefore place activity in different periods.
4. Trace a sample difference
Pick a source document and follow its invoice, payment, and ledger entries. If the same scope and measure still disagree, share those references with support.