Transfer Object Values MUST BE overridden with Parameter values

[westei]

If a property of the transfer object is also specified as a parameter in the request (typically path parameters) the value of the transfer object MUST BE ignored and overridden with the value of the Parameter

Example:

PUT /studies/1
  {
    "studyId": 3,
    "title": "Title of Study 3",
    [..]
  } 

In this case the parameter studyId: 3 MUST BE overridden with 1 as used in the path.

This affect all data types like Study, Participant, Observation, Intervention ...