[Nnrf_NFManagement] POST /subscriptions request with a subscriptionId already created serves a 409 response (R15.2.0). The specification doesn't allow the 409 response but we think it is the one that should be set.

TS29510_Nnrf_NFManagement_CreateSubscription_subscriptionId_Conflict.txt

POST /nnrf-nfm/v1/subscriptions HTTP/1.1
Host: vdev-newedge0001.b-com.local:8180
Connection: keep-alive
Content-Length: 130
accept: application/json
DNT: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36
Content-Type: application/json
Origin: http://vdev-newedge0001.b-com.local:8180
Referer: http://vdev-newedge0001.b-com.local:8180/
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9

{
  "nfStatusNotificationUri": "http://127.0.0.1:8181/namf-mt/v1/nnrf-nfm/notification",
  "subscriptionId": "123456-subs987655"
}

HTTP/1.1 409 Conflict
Connection: keep-alive
Access-Control-Allow-Origin: *
Access-Control-Allow-Headers: Content-Type, Authorization, Accept, Accept-Language
Content-Type: application/problem+json
Content-Length: 389
Access-Control-Allow-Methods: GET, PUT, POST, PATCH, DELETE, OPTIONS
Date: Thu, 14 May 2020 09:26:34 GMT

{
   "type":"InstanceAlreadyExistsRuntimeException",
   "title":"conflict",
   "status":409,
   "detail":"instance with subscriptionId value 123456-subs987655 of type com.bcom.newedge._3gpp._5gc.nf.commons.models.SubscriptionData already exists",
   "instance":"123456-subs987655",
   "cause":"The instance already exists",
   "invalidParams":[
      {
         "param":"subscriptionId=123456-subs987655",
         "reason":"already created"
      }
   ]
}