Multiple Part-B updates are allowed; each change should be recorded so the bill always reflects the current conveyance.
Note
Rules can change through GST notifications. Always confirm the current position on ewaybillgst.gov.in or with a tax professional for your specific case.
Related: all FAQs, the complete guide, and the validity guide.
Frequently asked questions
How many times can I update the vehicle?
As many times as the journey requires — update Part-B each time the conveyance changes.
Does updating Part-B reset validity?
No, updating the vehicle doesn't extend validity; use the extension option if more time is needed.