Tally Prime can generate bills by sending invoice data to the portal through API credentials, so you don't re-key details. The setup uses an API user — not your web login.

Setup

Create an API user on the portal, then enter those credentials in Tally's E-Way Bill configuration. Full steps are on the generate in Tally page.

Generating from a voucher

Record the sales voucher with all mandatory details, then use Tally's E-Way Bill option to push the data and fetch the EBN into the voucher.

Fixing invalid credentials

The invalid login credentials error almost always means web credentials were used instead of API credentials.

Frequently asked questions

Why API and not my web login?
API access uses a dedicated API user created on the portal for software integrations.
Does 2FA break Tally?
API works via the API user; after 2FA changes, re-confirm the API setup.