Generating invoice api grant_token code from java api

Hi,

In one of my application I am using invoice API. I refered https://www.zoho.com/invoice/api/v3/#oauth.

I can able to get refresh_token and access_token through our java API passing grant_token as code parameter.

But I generated the grant_token code from browser. I need to get grant_token code form API.

I used the url https://accounts.zoho.com/oauth/v2/auth? with parameteres from API, Its redirecting to zoho login page to authenticate.

how to achieve this, Am I need to add any authentication header in addition(I tried basic autentication: " "Basic base64encoding({userId: pwd}) but no result).

Or is it not possible to get through API. If possible please give me brief information or example or documentation will be appreciated.

Thanks

Zoho Desk Resources

Desk Community Learning Series
Digest
Functions
Meetups
Kbase
Resources
Glossary
Desk Marketplace
MVP Corner
Word of the Day

Topic Participants
kumar.govindh
Balaji R
PASQUIER

Sticky Posts
Zoho Finance Workshop 2023 is coming to the USA. Get exclusive training on Zoho Finance apps, one-on-ones, and more.
Hello all, We'd like to invite you to our biggest Zoho Finance workshop in the United States. After a brief break, we are excited to be back. This year, we're bringing together our customers and community members for two days of curated hands-on sessions,
How to maintain steady cash flow during the COVID-19 crisis using Zoho Invoice
Dear customers, I hope this finds you and your loved ones in good health. As we are witnessing, the COVID-19 pandemic has started taking a toll on businesses of all types. Here are some useful tips that could help you streamline your invoicing and AR processes to keep your business healthy. 1. Communicate clearly with your customers: During this period, transparent communication with customers is a necessity. A lot of businesses have started displaying messages on their home pages, explaining their
Introducing: Digital signature for estimates and invoices
Dear customers, We are pleased to announce that the much awaited Zoho Invoice - Zoho Sign integration is live! You can now sign your estimates and invoices before emailing it to your customers. Also, you can have them sign your estimates while accepting it. Here is our help document to help you get started: https://www.zoho.com/invoice/help/integrations/sign-integration.html Note: This feature is available across all editions of Zoho Invoice except the Indian edition. Out of all the feature requests
Webinar: Introduction to the Client Portal
Business owners know there is never enough time in the day. Not only do you have to beat the competition and make the sale, you then have to make sure you get paid. In fact, the sales process starts way before the sale, and never really ends. Preparing and getting estimates approved, collecting payments, and fielding customer requests for information related to past transactions are all part of the day in the life of a business owner. Well, Zoho Invoice can offer some relief to weary business owners.