This tab shows the customer ledger, along with outstanding, paid invoices and balances.
The overview for each customer shows outstanding invoices, which have been paid and the balances for each customer up to certain date.
In the top left corner you will also have a filtering function.
One thing that is important to remember is that the customer ledger in Moment only contains information pertinent to invoicing in Moment and payments registered in Moment. No invoice information from external accounting systems is received into Moment. If any mismatch is found between Moment's customer ledger and the customer ledger in your accounting system, you need to compare these two and find what journal entries that are missing.
This same principle goes for payments received, if any mismatches are found, you need to go through payments received in your bank and compare them to what's been registered in Moment.