Comment 2 for bug 1828565

I was able to recreate this using the following steps:

ubuntu@wheeler:~$ openstack endpoint group --os-cloud devstack-admin create epg1 epg1.json
+-------------+------------------------------------------------------------------------------+
| Field | Value |
+-------------+------------------------------------------------------------------------------+
| description | None |
| filters | {u'interface': u'admin', u'service_id': u'569dbe5299a44827b4413eb402dc3065'} |
| id | ff0e5d3ac6d2440da62df10347b910f5 |
| name | epg1 |
+-------------+------------------------------------------------------------------------------+
ubuntu@wheeler:~$ openstack endpoint group --os-cloud devstack-admin create epg2 epg2.json
+-------------+------------------------------------------------------------------------------+
| Field | Value |
+-------------+------------------------------------------------------------------------------+
| description | None |
| filters | {u'interface': u'admin', u'service_id': u'f3b50433a0ce46169fa44cfd5ae88a0f'} |
| id | 41251ca0c8de41a3beb423ac4494de9e |
| name | epg2 |
+-------------+------------------------------------------------------------------------------+
ubuntu@wheeler:~$ openstack endpoint group show epg1 --os-cloud devstack-admin
More than one endpointgroup exists with the name 'epg1'.
ubuntu@wheeler:~$ cat epg1.json
{
    "interface": "admin",
    "service_id": "569dbe5299a44827b4413eb402dc3065"
}
ubuntu@wheeler:~$ cat epg2.json
{
    "interface": "admin",
    "service_id": "f3b50433a0ce46169fa44cfd5ae88a0f"
}
ubuntu@wheeler:~$ openstack endpoint group list --os-cloud devstack-admin
+----------------------------------+------+-------------+
| ID | Name | Description |
+----------------------------------+------+-------------+
| 41251ca0c8de41a3beb423ac4494de9e | epg2 | None |
| ff0e5d3ac6d2440da62df10347b910f5 | epg1 | None |
+----------------------------------+------+-------------+