OpenLDAP Faq-O-Matic: ldap_add/modify: Object class violation

	OpenLDAP Faq-O-Matic : OpenLDAP Software FAQ : Common Errors : ldap_add/modify: Object class violation
	This error is returned with the entry to be added or the entry as modified violates the object class schema rules. Normally additional information is returned the error detailing the violation. Some of these are detailed below. Violations related to the entry's attributes: Attribute not allowed A provided attribute is not allowed by the entry's object class(es). Missing required attribute An attribute required by the entry's object class(es) was not provided. Violations related to the entry's class(es): Entry has no `objectClass` attribute The entry did not state which object classes it belonged to. Unrecognized `objectClass` One (or more) of the listed `objectClass` values is not recognized. No structural object class provided None of the listed `objectClass` values is structural. Invalid structural object class chain Two or more structural `objectClass` values are not in same structural object class chain. See also ldap add: invalid structural object class chain. Structural object class modification Modify operation attempts to change the structural class of the entry. See also ldap_modify: cannot modify object class. Instanstantiation of abstract `objectClass`. An abstract class is not subordinate to any listed structural or auxiliary class. Invalid structural object class Other structural object class problem. No `structuralObjectClass` operational attribute This is commonly returned when a shadow server is provided an entry which does not contain the `structuralObjectClass` operational attribute.
	Note that the above error messages as well as the above answer assumes basic knowledge of LDAP/X.500 schema.
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