Most E-Way Bill errors fall into a few buckets: login and OTP issues, validation errors (GSTIN, vehicle, HSN, PIN, distance), portal availability, and integration errors in Tally or the API.
Login and OTP errors
See OTP not received, captcha not working, account blocked and session expired.
Validation errors
See invalid GSTIN, invalid vehicle number, HSN code, PIN code and distance validation errors.
Portal and integration
For availability check portal not opening and portal down today; for integrations see Tally login and API authentication errors.
Frequently asked questions
The portal won't load — is it down?
Test on another network first; if it loads there, the issue is local.
Tally says invalid credentials.
Tally needs API credentials, not your web login — create an API user.