If Part-A (invoice, value, GSTINs) is wrong, the bill must be cancelled within 24 hours and a fresh one generated. Part-B can be updated as the vehicle changes en route.
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
Part-A is wrong — what now?
Cancel the bill within 24 hours (if not verified in transit) and generate a corrected one. Part-A cannot be edited.
Can I change the vehicle number?
Yes — update Part-B with the new vehicle details when the conveyance changes.