samba - Feb 2004 - Error was NT_STATUS_OK

Hello

samba-3.0.2
just after starting a brand new installation of samba-3.0.2 I issued the
command net rpc trustdom establish KEVF_D1 and entered a correct password. What
I got was:

Password:
[2004/02/12 14:35:56, 0] utils/net_rpc.c:rpc_trustdom_establish(1986)
  Couldn't verify trusting domain account. Error was NT_STATUS_OK
                                                     ^^^^^^^^^^^^

What does it mean? It doesn't make a sense to me. It something like famous
Windows message: Error: Success.

After reentering the command and typing in the same password I got:

oberon my # net rpc trustdom establish KEVF_D1
Password:
[2004/02/12 14:40:24, 0] utils/net_rpc.c:rpc_trustdom_establish(2106)
  Success!

Cl<

I have discovered what I have done wrong: sitting on KEVF_D4
Samba 3.0.2 PDC instead of net rpc trustdom establish KEVF_D1 I issued
net rpc trustdom establish KEVF_D4.

However I still wonder why I didn't get more meaningful message
(something like: you are trying to make a loopback interdomain trust
relationship or: invalid argument) than "Error was NT_STATUS_OK".

Cl<