ERROR: LDAP schema validation

Error message:
LDAP schema validation failed with the following errors or warnings:
The first database does not allow slapschema; using the first available one (2)

GERMAN:
Fehlermeldung:
Die LDAP-Schema-Validierung ist mit den folgenden Fehlern oder Warnungen fehlgeschlagen:
The first database does not allow slapschema; using the first available one (2)

May somebody can help?
best regards
Peter

@Peter do you solve this? I’m getting the same issue

A bit late to the party, but did you set the UCRV ldap/monitor to the value true? The database cn=monitor does not allow slapschema.
In this case, the diagnosis is too strict. This is not an error.