Definition
Part-B of an eWay Bill contains the transport details — vehicle number and transporter ID — and must be updated whenever the conveyance changes during transit. It is mandatory for the eWay Bill to be valid for movement beyond a short local distance.
Manually updating Part-B is error-prone and often forgotten, which invalidates the eWay Bill and invites penalties. GPS-based automation updates Part-B from live vehicle data.
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