Help needed with replication and ldapadd on version 2.2

[Jonathan Halevy]

Hello,

I have a slave server that I try to run ldapadd from remote and it fails.
I get the following error:
ldap_add: Internal (implementation specific) error (80)
       additional info: no structuralObjectClass operational attribute

If I remove the updatedn line from slapd.coinf / restart the ldap, the
command works. Yet, now* replication does not.*

Please tell me what am I doing wrong.

Is it related the the schema?
Is it related to access control?

Any help will be appreciated.

Jonathan