[root@hpe-dl380pgen8-02-vm-15 ~]# subscription-manager version
server type: Red Hat Subscription Management
subscription management server: 3.1.9-1
subscription management rules: 5.39
subscription-manager: 1.24.32


[root@hpe-dl380pgen8-02-vm-15 ~]# curl --stderr /dev/null --insecure --user admin:admin --request PUT --data '{"contentAccessMode":"org_environment"}' --header 'accept: application/json' --header 'content-type: application/json' https://10.70.35.0:8443/candlepin/owners/snowwhite
{
  "created" : "2020-04-16T10:29:37+0000",
  "updated" : "2020-04-16T11:50:48+0000",
  "id" : "8ac6a38071828911017182896e8d0002",
  "key" : "snowwhite",
  "displayName" : "Snow White",
  "parentOwner" : null,
  "contentPrefix" : null,
  "defaultServiceLevel" : null,
  "upstreamConsumer" : null,
  "logLevel" : null,
  "autobindDisabled" : false,
  "autobindHypervisorDisabled" : false,
  "contentAccessMode" : "org_environment",
  "contentAccessModeList" : "entitlement,org_environment",
  "lastRefreshed" : "2020-04-16T10:34:17+0000",
  "href" : "/owners/snowwhite"
}


[root@hpe-dl380pgen8-02-vm-15 ~]# subscription-manager register --org snowwhite --username admin --password admin --force --auto-attach --serverurl ansible-candlepin.usersys.redhat.com:8443/candlepin
Registering to: ansible-candlepin.usersys.redhat.com:8443/candlepin
The system has been registered with ID: 28a134b6-d46e-4217-8bfd-02498e31f386
The registered system name is: hpe-dl380pgen8-02-vm-15.hpe2.lab.eng.bos.redhat.com
Ignoring request to auto-attach. It is disabled for org "snowwhite" because of the content access mode setting.
^^ observe that installed product list is not getting displayed

Activation key with auto-attach=false

[root@hpe-dl380pgen8-02-vm-15 ~]# curl -k --request POST --user admin:admin --data '{"name":"GoldenTicketAutoFalse","autoAttach":"false"}' --header 'accept: application/json' --header 'content-type: application/json' https://ansible-candlepin.usersys.redhat.com:8443/candlepin/owners/snowwhite/activation_keys | python -mjson.tool
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   617    0   564  100    53    147     13  0:00:04  0:00:03  0:00:01   147
{
    "addOns": [],
    "autoAttach": false,
    "contentOverrides": [],
    "created": "2020-04-16T12:19:23+0000",
    "description": null,
    "id": "8ac6a38071828911017182ededbb0d71",
    "name": "GoldenTicketAutoFalse",
    "owner": {
        "displayName": "Snow White",
        "href": "/owners/snowwhite",
        "id": "8ac6a38071828911017182896e8d0002",
        "key": "snowwhite"
    },
    "pools": [],
    "products": [],
    "releaseVer": {
        "releaseVer": null
    },
    "role": null,
    "serviceLevel": null,
    "updated": "2020-04-16T12:19:23+0000",
    "usage": null
}
[root@hpe-dl380pgen8-02-vm-15 ~]# subscription-manager register --activationkey GoldenTicketAutoFalse --org snowwhite --force
Unregistering from: ansible-candlepin.usersys.redhat.com:8443/candlepin
The system with UUID 28a134b6-d46e-4217-8bfd-02498e31f386 has been unregistered
All local data removed
The system has been registered with ID: d4761b1c-39f6-4dcc-bd8d-3b8b34f47fa7
The registered system name is: hpe-dl380pgen8-02-vm-15.hpe2.lab.eng.bos.redhat.com
^^ no installed products are listed

Activationkey with auto-attach=true

[root@hpe-dl380pgen8-02-vm-15 ~]# curl -k --request POST --user admin:admin --data '{"name":"GoldenTicketAutoTrue","autoAttach":"true"}' --header 'accept: application/json' --header 'content-type: application/json' https://ansible-candlepin.usersys.redhat.com:8443/candlepin/owners/snowwhite/activation_keys | python -mjson.tool
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   613    0   562  100    51    248     22  0:00:02  0:00:02 --:--:--   248
{
    "addOns": [],
    "autoAttach": true,
    "contentOverrides": [],
    "created": "2020-04-16T12:21:23+0000",
    "description": null,
    "id": "8ac6a38071828911017182efc3630d85",
    "name": "GoldenTicketAutoTrue",
    "owner": {
        "displayName": "Snow White",
        "href": "/owners/snowwhite",
        "id": "8ac6a38071828911017182896e8d0002",
        "key": "snowwhite"
    },
    "pools": [],
    "products": [],
    "releaseVer": {
        "releaseVer": null
    },
    "role": null,
    "serviceLevel": null,
    "updated": "2020-04-16T12:21:23+0000",
    "usage": null
}
[root@hpe-dl380pgen8-02-vm-15 ~]# subscription-manager register --activationkey GoldenTicketAutoTrue --org snowwhite --force
Unregistering from: ansible-candlepin.usersys.redhat.com:8443/candlepin
The system with UUID d4761b1c-39f6-4dcc-bd8d-3b8b34f47fa7 has been unregistered
All local data removed
The system has been registered with ID: 838e4244-12eb-4bdd-ade3-2a4b2f97f642
The registered system name is: hpe-dl380pgen8-02-vm-15.hpe2.lab.eng.bos.redhat.com
^^ no installed product list , however there is no "Ignoring request to auto-attach. It is disabled for org "snowwhite" because of the content access mode setting." message , but a bug(https://bugzilla.redhat.com/show_bug.cgi?id=1805111) for that has already been logged, so moving this bug to verified

[root@hpe-dl380pgen8-02-vm-15 ~]# subscription-manager status
+-------------------------------------------+
   System Status Details
+-------------------------------------------+
Overall Status: Disabled
Content Access Mode is set to Organization/Environment Access. This host has access to content, regardless of subscription status.

System Purpose Status: Disabled

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (subscription-manager bug fix update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:3866