Sending data from Hono to Ditto - eclipse-hono

Question

Eclipse Hono and Eclipse Ditto have been connected successfully. And when I try to send the data from the Hono I will get 202 Accepted response as shown below.
(base) vignesh#nb907:~$ curl -X POST -i -u sensor9200#tenantSensorAdaptersss:mylittle -H 'Content-
Type: application/json' -d '{"temp": 23.07, "hum": 45.85122}' http://localhost:8080/telemetry
HTTP/1.1 202 Accepted
content-length: 0
But when I checked for the digital twin value using localhost:8080/api/2/testing.ditto:9200 - It is not getting updated.
I came across the error while enquiring the logs.
connectivity_1 | 2019-10-14 15:18:26,273 INFO [ID:AMQP_NO_PREFIX:TelemetrySenderImpl-7]
o.e.d.s.c.m.a.AmqpPublisherActor akka://ditto-
cluster/system/sharding/connection/27/Amma123465/pa/$a/c1/amqpPublisherActor2 - Response dropped,
missing replyTo address: UnmodifiableExternalMessage [headers={content-
type=application/vnd.eclipse.ditto+json, orig_adapter=hono-http, orig_address=/telemetry,
device_id=9200, correlation-id=ID:AMQP_NO_PREFIX:TelemetrySenderImpl-7}, response=true, error=true,
authorizationContext=null, topicPath=ImmutableTopicPath [namespace=unknown, id=unknown, group=things,
channel=twin, criterion=errors, action=null, subject=null, path=unknown/unknown/things/twin/errors],
enforcement=null, headerMapping=null, sourceAddress=null, payloadType=TEXT, textPayload=
{"topic":"unknown/unknown/things/twin/errors","headers":{"content-
type":"application/vnd.eclipse.ditto+json","orig_adapter":"hono-
http","orig_address":"/telemetry","device_id":"9200","correlation-
id":"ID:AMQP_NO_PREFIX:TelemetrySenderImpl-7"},"path":"/","value":
{"status":400,"error":"json.field.missing","message":"JSON did not include required </path>
field!","description":"Check if all required JSON fields were set."},"status":400}, bytePayload=null']
gateway_1 | 2019-10-14 15:19:47,927 WARN [b9774050-48ae-45c4-a937-68a70f8defe5]
o.e.d.s.g.s.a.d.DummyAuthenticationProvider - Dummy authentication has been applied for the following
subjects: nginx:ditto
gateway_1 | 2019-10-14 15:19:47,949 INFO [b9774050-48ae-45c4-a937-68a70f8defe5]
o.e.d.s.m.c.a.ConciergeForwarderActor akka://ditto-cluster/user/gatewayRoot/conciergeForwarder -
Sending signal with ID <testing.ditto:9200> and type <things.commands:retrieveThing> to concierge-
shard-region
gateway_1 | 2019-10-14 15:19:48,044 INFO [b9774050-48ae-45c4-a937-68a70f8defe5]
o.e.d.s.g.e.HttpRequestActor akka://ditto-cluster/user/$C - DittoRuntimeException
<things:precondition.notmodified>: <The comparison of precondition header 'if-none-match' for the
requested Thing resource evaluated to false. Expected: '"rev:1"' not to match actual: '"rev:1"'.>.
I have set the all the json fields. But not sure what I am missing.
I also can see this in the log
nginx_1 | 172.18.0.1 - ditto [14/Oct/2019:13:19:48 +0000] "GET
/api/2/things/testing.ditto:9200 HTTP/1.1" 304 0 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5)
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36"
Please let me know if I am missing something.

Answer 1

Did you send the message in Ditto protocol or applied payload transformation?
Looks like a duplicate of Connecting Eclipse Hono to Ditto - "description":"Check if all required JSON fields were set."},"status":400}" Error where you had the same problem and error before.