Seeing this error? Tally connects with the portal's API user — not your web login — so wrong API setup fails. Below are the common causes and the fixes that resolve it for most users.
Why this happens
- You entered your web portal password instead of the API/GSP credentials.
- The API user was not created on the E-Way Bill portal.
- 2FA changes mean the API user needs the right setup.
- Tally's company GSTIN does not match the API user's GSTIN.
How to fix it
1
Create an API user
On the portal, register for API access and create dedicated API credentials.
2
Enter API credentials in Tally
Use the API username/password in Tally, not your web login.
3
Match the GSTIN
Ensure the GSTIN in Tally matches the API registration.
4
Re-enable the connection
After 2FA, re-confirm the API user and reconnect Tally.
Important
If the problem is on the portal side (maintenance or server load), no browser fix will help — confirm with a second network first.
Still stuck? Compare with other issues in the full error guide, or review the login guide.
Frequently asked questions
Why am I seeing the Tally E-Way Bill Invalid Login Credentials issue?
Tally connects with the portal's API user — not your web login — so wrong API setup fails.
What's the quickest fix for tally e-way bill invalid login credentials?
Create an API user: On the portal, register for API access and create dedicated API credentials.