Hi,

I found two errors in the startTransaction(), both of them are invalid type errors.
Refer to OCPP 2.0: Part 2- Specification, page 323 1.62 TransactionEvent section.

1. transactionData.remoteStartId should be INTEGER

"transactionData": {
		"id": lastTranId,
		"remoteStartId": 0 //integer
}

1. sampledValue.value should be DECIMAL

"meterValue": [{
		"timestamp": formatDate(new Date()),
		"sampledValue": [{
			"value": 0 //decimal
		}]
}]

Thanks.