Retrieves whatever information (in the form of an entity) is identified by the Request-URI.
Generally speaking, a GET represents a request to retrieve information from the server. for example, calling GET on the Request-URI http://ServerNameHere.com/CaseMapAD/CMServerAD.svc/version returns the version information of the service.
If the Request-URI refers to a data-producing process, the server will return the produced data in the response, rather than the source text of the process; the exception would be if the text happens to be the output of the process.
The GET method should not contain entity-body in the request; any request entity-body will be discarded and not processed.
The following table describes the return codes common to GET actions that return information about a single resource, such as GET get-cases.
Status Code  | 
Meaning  | 
Example  | 
200  | 
The input is valid.  | 
/cases/case-6/data/ 
  | 
401  | 
The user is unauthorized.  | 
User does not have the correct authorization on their account. 
  | 
401  | 
The authorization header contains a locked user ID.  | 
/cases/case-6/data/, when user is locked. 
  | 
401, WWW-authenticate  | 
The user has no authorization.  | 
The user does not have an Active Directory account on the server. 
  | 
403  | 
The user or policy has been denied.  | 
Invalid user token. 
  | 
404  | 
The user input is invalid.  | 
/cases/case-$$/data/ /cases/case-0/data/ /cases/case-@@/data/ 
  | 
404  | 
The URI is in an invalid format.  | 
/cases/case6-61/data/ 
  | 
404  | 
The specified Resource ID does not exist.  | 
/cases/case-9999/data/, when case 9999 doesn't exist. 
  | 
404  | 
The call is missing necessary information.  | 
/cases/case-/data/ 
  | 
404/410  | 
The resource has been deleted.  | 
/cases/case-6/data/ , when case 6 has been deleted. 
  | 
405  | 
The method type does not match up with the call.  | 
Giving DELETE/PUT/POST instead of GET 
  | 
The following table describes the GET methods available for each service:
Service  | 
GET methods  | 
CMServerAD  | 
 
  | 
The following is an example of a URI used to retrieve data about a case, as described in the example section of GET get-case_data.
GET http://www.serverRersourceName.com/CMServerAD/cases/case-6/data/  |