REST Version is defined by passing an optional value in the header attribute ‘ApiVersion’.
When no option is provided the REST call will default to version 1.0.
● Version2.0 supports sending Custom Attributes using the new “Free Option” type.
● Sending Custom Attributes when using 2.0 has changed for non “Free Option”; versions so
review our Swagger UI before moving to version 2.0 if you are sending Custom Attributes
over REST.