​1.5​ Naming Requirements

​1.5.1​ Property Names and String Literals

In the JSON serialization all property names and string literals MUST be exactly the same, including case, as the names listed in the property tables in this specification. For example, the SDO common property created_by_ref must result in the JSON key name "created_by_ref". Properties marked required in the property tables MUST be present in the JSON serialization.

​1.5.2​ Reserved Names

Reserved property names are marked with a type called RESERVED and a description text of “RESERVED FOR FUTURE USE”. Any property name that is marked as RESERVED MUST NOT be present in STIX content conforming to this version of the specification.