API to fetch Tax Invoice document from Zoho Invoice

API to fetch Tax Invoice document from Zoho Invoice

Hi Team,

                 We have built a successful integration with Zoho books apis where we fetch information on customers, invoices and payments. We have a request from our subscribers to fetch the tax invoice document for the invoice as well. How can we achieve that with API integration. Is there Tax invoice fetching or any document fetch api for Zoho invoices? 

Thanks.
Jiten