sql server - Hibernate Tools "Duplicate class" error on reverse engineering -

i trying reverse engineer sql server 2005 using hibernate tools , getting strange error:

org.hibernate.cfg.jdbcbinderexception:       duplicate class name 'checkconstraints' generated      'org.hibernate.mapping.table(e2rm_maintenance_development2.sys.check_constraints‌​)'.       same name generated                   'org.hibernate.mapping.table(e2rm_maintenance_development2.sys.check_constraints‌​)'       duplicate class name 'checkconstraints' generated      'org.hibernate.mapping.table(e2rm_maintenance_development2.sys.check_constraints‌​)'.      same name generated      'org.hibernate.mapping.table(e2rm_maintenance_development2.sys.check_constraints‌​)' 

a development user has typically access multiple database schema s similar tables. generation tool tries generate output databases , results in duplicate class names (even if ask ddl generation).

add 'reveng' setup , limit output 1 database schema.

also add necessary parameters selected 'exporters'. necessary, not indicated in overview.