I attempted that this morning as well, and will present reference here:
Contents of test.conf
include /etc/openldap/schema/core.schema
include /etc/openldap/schema/cosine.schema
include /etc/openldap/schema/inetorgperson.schema
include /etc/openldap/schema/nis.schema
include /etc/openldap/schema/misc.schema
include /etc/openldap/schema/ppolicy.schema
include /etc/openldap/schema/cgp.schema (the referenced schema
for conversion)
testing directory created
slaptest -f test.conf -F testing
error message:
5909f790 /etc/openldap/schema/cgp.schema: line 8 attributetype: Duplicate
attributeType: "2.16.840.1.113730.3.1.241" slaptest: bad configuration
directory!