Fleet API: ID gets ignored when creating a package policy

[ckauf]

Kibana version: 8.6.2

Elasticsearch version: 8.6.2

Original install method (e.g. download page, yum, from source, etc.): Cloud

Describe the bug: When creating a package policy and specifying the id in the body, that field seem to get ignored

Steps to reproduce:

1. Create an Agent Policy

   POST kbn:/api/fleet/agent_policies
   {
   "id": "someId",
   "name": "someName",
   "description": "",
   "namespace": "default",
   "monitoring_enabled": [
   "logs",
   "metrics"
   ]
   }

2. Add a Package Policy, including the id in the body:

   POST kbn:/api/fleet/package_policies
   {
   "id": "someOtherId",
   "policy_id": "someId",
   "package": {
   "name": "log",
   "version": "1.1.1"
   },
   "name": "thisisaname",
   "description": "",
   "namespace": "default",
   "inputs": {
   "logs-logfile": {
     "enabled": true,
     "streams": {
       "log.log": {
         "enabled": true,
         "vars": {
           "paths": [
             "test"
           ],
           "data_stream.dataset": "generic",
           "tags": [],
           "custom": ""
         }
       }
     }
   }
   }
   }

3. Verify how the id in the output differs from the id in the create call

   {
   "item": {
   "id": "4db28dd9-7fd7-4442-b706-f62ec3c2bfdd",
   "version": "WzEwNzM5MTUzLDExXQ==",
   "name": "thisisaname",
   "namespace": "default",

Expected behavior: ID should be the same

Screenshots (if relevant): API Spec:

[elasticmachine]

Pinging @elastic/fleet (Team:Fleet)

[juliaElastic]

It seems that the service supports passing an id parameter, but the request handler doesn't set it. So I think the fix would be to pass the missing id parameter from the request body to the service create call.

[maximilianpohle]

Dear all,

the error already exists in 8.5.3 as well.