Business · Live
E-Way Bill Validity Extension API
Extend validity on a consignment still in transit.
What the Extend Validity API does
Extend an e-way bill that will expire before the consignment arrives — a breakdown, a detour or a delay at a checkpoint. The portal only allows extension inside a window around the expiry time, so this is normally triggered automatically by a tracking system rather than by hand. Calls carry your own GST portal API credentials (GSTIN, username and password), so filings are made as you, on your own registration. We never file on our own account.
Popular use cases
- →Fleet systems extending bills automatically when a delivery slips
- →Long-haul transporters covering multi-day journeys
- →Exception handling for breakdowns and route diversions
curl -X POST https://apisathi.in/gw/v1/ewb-extend-validity-v1/ \
-H "X-API-Key: live_xxx" \
-H "Content-Type: application/json" \
-d '{ "gstin": "23BEFPJ5660F2ZP", "username": "your_portal_user", "password": "•••", "payload": { "ewbNo": 391000123456, "remainingDistance": 120, "extnRsnCode": 1 } }'{
"success": true,
"data": { "ewayBillNo": 391000123456, "validUpto": "07/09/2026" }
}Frequently asked questions
When can I extend?
Only within the window the portal allows around expiry — you cannot extend a bill long before it lapses, nor one that expired well in the past.
What if the extension is refused?
The portal’s reason is returned to you and the call is not charged.
Start using the Extend Validity API today
Sign up, recharge a prepaid wallet and generate a key in minutes. Lowest price guaranteed, no volume commitment.