The one I'm making...The CIS product exists on QBOCreating an invoice, setting the CIS product, amount and tax code via the API works flawlessly with exception ...

I logged this as a support ticket. The official reply is that CIS is not supported by the API.

I am experiencing a similar issue with CIS not calculating, however, the invoices CIS products are related to are created via the API.If I create the CIS invoic...