You cannot use the same tax item in both the line items and the txn tax.

I use Java application to add Invoices to desktop QuickBooks and Web Connector. I can't add some invoices because of the error in the title. I'm trying to add the same invoice manually and this error doesn't appear How to reproduce this issue in QuickBooks? Please give me an example of what to do to see this error when I create an invoice manually in the QuickBooks interface?

How to fix it? Thanks in advance!

Here is an example of part of XML that I send to Web Connector that contains items:

<InvoiceLineAdd>

<ItemRef>

<ListID>[removed]-9123456</ListID>

<FullName>CompanyName:ItemFullName</FullName>

</ItemRef>

<Desc>item_name</Desc>

<Quantity>1</Quantity>

<Amount>2265.00</Amount>

</InvoiceLineAdd>

<InvoiceLineAdd>

<ItemRef>

<ListID>80000001-1514927072</ListID>

<FullName>salestaxnys</FullName>

</ItemRef>

<Amount>201.02</Amount>

</InvoiceLineAdd>