would like help in getting pubsub to work

Thanks for the help, I now am able to publish items! However, I still have two problems which are identified at the bottom of this note.

Here is what I did (using the examples from JEP-060, with the names changed to match accounts & machines in my installation:

1) create top level node of my_username
Example 116 with these changes:
* node name is full path, i.e.
node='home/jabber.mycompany.com/my_username'
* remove configure/ line

2) create leaf node where information will be published
Example 116 (again) with these changes:
* node name is full path, i.e.
node='home/jabber.mycompany.com/my_username/first_node'
* remove configure/ line

3) publish data to that node
Example 1 with node name of
node='home/jabber.mycompany.com/my_username/first_node'

4) retrieve all items
Example 66 with node name of 3 above
The data returned in the iq stanza is the data that was published!

5) Subscribe to a node
Example 28 with node name of 3 above

PROBLEM: The response is
iq
from='pubsub.jabber.mycompany.com'
to='my_username@jabber.mycompany.com/30194896771184793349711507'
id='sub1'
type='result'/

Example 29 indicates that there should be subscription information
in the response, as in:
subscription
node='princely_musings'
jid='francisco@denmark.lit'
subid='ba49252aaa4f5d320c24d3766f0bdcade78c78d3'
subscription='subscribed'/

But there is none. I think the default configuration for ejabberd is for nodes not to require authorization.

6) Retrieve subscriptions
Example 20 with names changed

PROBLEM:
The response is
error code="501" type="cancel" feature-not-implemented

What am I doing wrong?

Thank you for your help.