Mapped LDAP Group Setting for BusinessObjects

[lreju]

I am running crazy because of this error when I try to set up LDAP authentication for BO XI R2

"Error updating LDAP properties: The secLdap plugin failed to get the dn for the group ou=Engineering, dc=my-domain, dc=com"

Here is my schema:

dn: dc=my-domain,dc=com
ObjectClass: dcObject
ObjectClass: organization
dc: my-domain
o : Example

dn: ou=Engineering,dc=my-domain,dc=com
ObjectClass: OrganizationalUnit
ou: Engineering

dn: ou=Sales,dc=my-domain,dc=com
ObjectClass: OrganizationalUnit
ou: Sales

dn: cn=John Smith,ou=Engineering,dc=my-domain,dc=com
ObjectClass: person
cn: John Smith
sn: Smith

dn: cn=Peter Jenson,ou=Sales,dc=my-domain,dc=com
ObjectClass: person
cn: Peter Jenson
sn: Jenson

My questions is: what should i put in the box LDAP tab of the authentication page.

Does anyone have a sample schema that works?