If you receive the error "Duplicate Document Number Error: You must specify a different number. This number has already been used." or similar when trying to push a booking/payment across to your QBO account.

You can easily fix it by following these steps:

1. Open your QBO and navigate to Settings >> Account and Settings >> Sales

2. Check that 'Custom transaction numbers' is turned OFF

If its on you can turn it off by clicking the edit button, and then clicking the 'Custom transaction numbers' checkbox.

3. Then go back to QBO Settings >> Account and Settings >> Advanced

4. Check that 'Warn if duplicate check/bill number is used' is also turned OFF, you can turn this off by clicking the edit button and clicking the corresponding checkbox.

When you get this error:

Detail: The name supplied already exists. : Another customer, supplier, or employee is already using this name. Please use a different name.,

​Message: Duplicate Name Exists Error
​
This is because KennelBooker is attempting to create a customer named "John Doe" (for example), and there is already a vendor or employee named “John Doe”, or “Doe, John”.

Unfortunately, QuickBooks does not allow you to have customers, vendors or employees with the same name, even if it is set inactive.

To fix this problem, please search your list of vendors and employees in QuickBooks to find one with the same name (“John Doe”, or “Doe, John”) and change their name to something like “Doe - Customer, John”, or “John Doe - Customer”. You may also have to search your list of customers with the option to view inactive enabled.

Now go back to the QuickBooks screen and try to Resend the bookings.

If you're receiving this error when syncing an invoice/receipt, you can fix the problem by modifying some setting in QuickBooks.

This error will occur when a Service is created in QuickBooks as a Product/Service, then is manually changed to a Bundle in QuickBooks.

To correct this issue:

Login to QuickBooks

Locate the Products/Services page

Change the Product in question from a Bundle to a Service. You may need to re-create it as a Service.

If you recreate the service in QuickBooks you may need to update the service code in KennelBooker.

See our main QuickBooks integration article on settings up service/product codes.

Sometimes QuickBooks does not pass us back you Company ID if you see the following message please follow the instructions below to manually set your company Id.

Log into your account and click on the Settings Icon and click on the Account and Settings link

Once on the Account and Settings page you will see the Company Id highlighted, copy this into KennelBooker in to the Company Id text-box and click [Set Company Id] .

If you get the following error when trying to send a booking over to QuickBooks

Validation Exception was thrown.Details:Invalid Reference Id : Categories cannot be used in transactions

It is because you have a Item Ref set for either the Booking Type, one of the Additional Services, or a Products added to a booking, that is category identifier.

QuickBooks does list Category Names in the Item Reference list but does not let you use them.