support for JSON Schema (https://json-schema.org/specification.html) for all of its publicly exposed endpoints. Data received by Apache Unomi 2 will first be validated against a known schema to make sure sure it complies with an expected payload. If the received payload does not match a known schema, it will be rejected by Apache Unomi 2. Apache Unomi 2 also introduces a set of administrative endpoints allowing corresponding section of the documentation. 1.1.4. UPDATED DATA MODEL The introduction of JSON schema required us to modify Apache Unomi data model, One of the key differences is the removal of open