Resolution:
The error "Object class violation" is generally reported by the LDAP Server and, is passed to the adapter indicating that, add or modify DN operation violates the object class rules for the entry.
For example, the following types of request return this error:

1. If the entry you are trying to add/ modify (through BW/ IM) does not contain all the mandatory attributes for the configured object class.

2. If an entry you are trying to add with a value for an attribute which the class definition does not contain.

Please verify that all the mandatory attributes are specified as required.