I appreciate you for providing us the in-depth details of your concern, Marat.
You'll encounter this error message if the invoice you have in the Java application may have the same tax item in both line items. To resolve this, just open the invoice and use different items if you're going to use the same tax. Then, import the transaction into QuickBooks again.
You can also manually enter the transaction in QuickBooks to avoid getting the error message (just like you did on your end). Let's make sure we use the different items if you'll be using them both on the body of the invoice and at the bottom in the Tax box. This will double-tax some of the taxable amounts on the transaction.
I have articles here that provide details about QuickBooks Web Connector:
On the other hand, all third-party integrations in any version require developers' expertise. If you encounter an issue importing the invoice from your Java Application into QuickBooks Desktop QuickBooks and Web Connector, it'll best to post this question to our Intuit Developer Forum.
You'll get an answer from one of the experts handling software integration. They'll be able to guide you through the process and ensure the data are successfully imported without a problem.
Here's how to reach them:
- Go to this website: https://help.developer.intuit.com/s/.
- Choose QuickBooks Desktop.
- Tap the Ask a Question button.
- Enter your concern and wait for the answer coming from one of the experts.
Visit our QuickBooks Desktop Articles page for more insights about running your business.
This should point you out in the right direction. I'm just one reply away if you need anything else in running your business in QuickBooks. I'm always here to help.
