IdentityIQ has been installed and set up with the contents of IdentityExtended.

This statement is incorrect. IdentityIQ supports extended identity attributes, but searchable extended attributes are not unlimited. Searchable identity attributes require database-backed indexed placeholder properties defined in the extended Hibernate mapping and exposed through Identity Attribute configuration. The Word bank already states the correct limitation: when defining identity mappings under Global Settings > Identity Attributes, only 12 additional searchable attributes can be defined; additional identity attributes and mappings may exist, but they cannot all be searchable. The proposed solution says an unlimited number of additional searchable placeholder extended attributes can be added beyond the 10 shown, which contradicts the searchable-attribute limitation. Engineers must plan identity schema extensions carefully because searchable attributes affect database schema, indexing, performance, and UI search behavior. Adding unlimited searchable placeholders would create maintainability and performance problems and is not supported as a general installation design. References/topics: IdentityIQ Engineer — IdentityExtended.hbm.xml, extended identity attributes, searchable attributes, identity mappings, schema planning.