Before you connect Rentman to Quickbooks, the names of your contacts/customers must be exactly the same in Rentman and Quickbooks. If the names aren't the same, Quickbooks will create unwanted new contacts after your first automatic export.
Important: Invoices that belong to "private individuals" in Rentman cannot be automatically exported to Quickbooks. To work around this, you can change the type of your contact to "company".
Option 1: Export and import
The easiest way is by exporting your contacts/customers from Rentman to Quickbooks, or the other way around. By doing it this way, you ensure that all contact/customer names are directly copied over to the other program.
Option 2: Manually check all company names
If you want to avoid importing/exporting, you can also manually check all contact names in Rentman and Quickbooks.
- In Quickbooks, look for the Customer name field.
- In Rentman, look for the Company name field.