Netex_ITA_1.10_EPIP is fully EPIP compliant and Netex_ITA_1.10_EPIP+Level2 is an expanded version with entities and structures specific for Italian RAP-NAP dialogue.
The xsd folder provide the original Netex EPIP xsd, available also through DATA4PT website, and the Netex level 2 extension xsd needed for validation and generation of NeTEx Italian Profile xml.