Exported group can't be imported again: Invalid syntax (21) additional info: objectClass: value #0 invalid per syntax

Hi!

I've exported groups from a ldap server. Importin the very same group fails:

ldap_add: Invalid syntax (21) additional info: objectClass: value #0 invalid per syntax

schema inetorgperson is, among others included.

The group I want to add:

dn: cn=somegroup,ou=Groups,dc=example,dc=org objectClass: posixGroups objectClass: top gidNumer: 3000 cn: somegroup memberUid: someuser

Command: # ldapadd -D cn=manager,dc=example,dc=org -W dn: cn=somegroup,ou=Groups,dc=example,dc=org objectClass: posixGroups objectClass: top gidNumer: 3000 cn: somegroup memberUid: someuser

adding new entry "cn=somegroup,ou=Groups,dc=example,dc=org" ldap_add: Invalid syntax (21) additional info: objectClass: value #0 invalid per syntax

Any ideas?