OpenLDAP 2.1 DN question

["Suresh Krishnan (QB/LMC)" <suresh.h.krishnan@ericsson.com>]

Hi Folks,
	I recently migrated from OpenLDAP 2.0x to 2.1. Whenever I try to add an entry of a specific objectclass I get an Invalid DN error

ldap_perror gives
PDK_LDAP_ADD_ENTRY_SYNC:: Invalid DN syntax
        additional info: invalid DN

This code used to work fine with OpenLDAP 2.0x. When I add this specific entry I use a DN whose RDN is not composed of an attribute type of this object class. I think this is what is causing the problem. eg.

objectclass has only attributetypes A,B,C
but my dn is D=3,dc=foo,dc=blah...

Is there a requirement somewhere that D has to be an attribute type for the given object class or is this a bug?

Thanks
Suresh