Deposits on Hand
REPORT FOR DEPOSITS ON HAND

In the Settings module, scroll to bottom of page and click 'Activate the developer mode (with assets).' Browser will reload.
In the Accounting module, click on the Accounting menu item just to the right of Customer & Vendor menus at top of screen.
Select Journal Items.
From the Favorites menu, select 'Unreconciled Deposits'
Study the list of deposits on hand. Locate any amounts in the Debit column -they must be reconciled with a Credit.
Click on the corresponding line to the Debit
If the amount of the Debit and the Credit are equal, check the selection box for each and choose 'Reconcile' from the Action menu.
You have reconciled the deposit.

If, however, the amounts are not equal, you will need to research the related invoice(s). 
Click the corresponding line of the Debit again to display the Journal Item window
On the right side, click on the link to the Journal Entry to take you to the invoice in question.
Review the chatter on the invoice for clues about this Debit.
If additional information is needed, scroll to the bottom of the window and click on the Sale Order
Review the chatter on the sales order for clues about this Debit.

Here is a video of the process:
https://screencast-o-matic.com/watch/c3l3cmVvdtc


Old method:
get the deposit report:
and attached is a copy of that report.