Problem with ldapmodrdn

["Chris Andrew" <chris_andrew@lineone.net>]

Hello,

I'm having problems using ldapmodrdn.

Ex:
I have a record with the following dn:
"cn=Chris Andrew, o=Oxspring, b=addressbook"

If I want to modify the "o" part, I would imagine I could use
ldapmodrdn <other stuff to bind> -r  'cn=Chris Andrew, o=Oxspring,
b=addressbook' 'o=HRBS'

However, this returns the following error:
ldap_modrdn2_s: Object class violation

The above works ok if I want to change the "cn" part - so why can't I modify
the "o" part?

Regards,
Chris