# Update e-Way Bill API: Change Part B Details | FastKYC

> Update vehicle and transport details in Part B of an existing e-Way Bill, so goods keep moving when the vehicle or transporter changes on the way.

Source: https://www.fastkyc.com/apis/update-eway-bill/

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[Merchant APIs](/apis/merchant/)

# Update e-Way Bill API

Update vehicle and transport details in Part B of an existing e-Way Bill, so goods keep moving when the vehicle or transporter changes on the way.

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Category

[Merchant APIs](/apis/merchant/)

## What the Update e-Way Bill API does

Update e-Way Bill changes the vehicle and transportation details in Part B of an existing e-Way Bill.

Consignments often change trucks or transporters on the way. Updating Part B from your own system keeps the bill matching the vehicle actually carrying the goods, without anyone logging in to the e-Way Bill portal.

## Where teams use the Update e-Way Bill API

1.  Recording a vehicle change during transit
    
2.  Updating transporter details when a shipment is handed over
    
3.  Keeping e-Way Bills in step with a transport management system
    

## Frequently Asked Questions (FAQs)

Which part of the bill does it change?

Part B, which holds the vehicle and transportation details.

Can it extend the bill's validity?

No. Use Renew e-Way Bill to extend validity.

## Start verifying with the Update e-Way Bill API

Book a walkthrough and we will show the call, the response and how it fits your onboarding flow.

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