curl --request POST \
  --url https://api.sandbox.co.in/gst/compliance/e-way-bill/consignor/bill/{ewb_no}/cancel \
  --header 'Content-Type: application/json' \
  --header 'authorization: <api-key>' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "ewbNo": 101012272040,
  "cancelRsnCode": 2,
  "cancelRmrk": "Cancelled the order"
}
'

{
  "code": 200,
  "data": {
    "alert": null,
    "data": {
      "cancelDate": "01/05/2024 07:56:00 PM",
      "ewayBillNo": "291010077005"
    },
    "status": "1"
  },
  "timestamp": 1763446641000,
  "transaction_id": "e7da707c-76c2-4c7e-afb7-a9997d9ab5d3"
}