Allow servers to require search parameters

[michaeldonnelly]

If a client performs a MeasureReport search that doesn't include an _id parameter:

• The server MAY require that a measure parameter is present.
• The server MAY require that a period parameter is present.
• The server MAY require that a subject parameter is present

[keithboone]

Absolute should say what Measure you want (1..n) For period, in a lot of cases, your are going to get someone who wants yesterday's day. Being able to specify a range of period. (1..2) Subject shouldn't be required Reporter might be desirable for diagnostics

These should be the minimum requirements for what the server supports, the server can go beyond that.
Servers shall report on what must be used to interact with the server ( see US Core IG) Clarify certain optional features ... if you are going to support this, do it this way.

[michaeldonnelly]

• The client SHOULD provide the measure parameter (1..*).
• The server MAY have business rules that require the measure parameter (1..*).
• The server MAY have business rules that require the client to specify a range in the period parameter (1..2).
• If the server has business rules requiring parameters or sets of parameters, when rejecting a request the server
  • SHALL return an http 400 status
  • SHALL return an OperationOutcome specifying what parameter(s) must be present

[keithboone]

Resolved