(Quick Reference)
                Service: Assign a route to an employee
Description: This web service is used to assign an employee which is not assigned before to a route
URL: 
https://BASE_URL/api/VERSION/routeEmployees
: POST
Request content type: application/json
Parameters:
| Name | Description | Type | Required | Example values | 
|---|
| employeeId | the id of employee to be assigned | Long | Yes | 111 | 
| routeId | the id of the assigned route | Long | Yes | 777 | 
| rootingDate | the date of the operation | Date | Yes | "2016-12-10" | 
| repeatPeriod | repetition type of the operation | String | Yes | Never, Weekly, Monthly | 
repeatPeriod can only be one of this value : "Never", "Weekly", "Monthly"
In order to assign an employee to a route, all the customers assigned to this route must be already assigned
to the specified employee
In the same rooting date we can't assign an employee to a route if the are already assigned to each other.
Success Output
 Success case: response.status = 201 
{
  "id": 1,
  "rootingDate": "2016-12-10",
  "repeatPeriod": "Monthly",
  "employee": {
    "id": 3,
    "reference": "R-E-001",
    "href": "/api/v1.0/employees/3"
  },
  "route": {
    "id": 2,
    "reference": "R-RT-001",
    "href": "/api/v1.0/routes/2"
  },
  "dateCreated": "2016-10-19T10:42:09Z",
  "lastUpdated": "2016-10-24T09:32:13Z"
} Failure Output
 Failure case:response.status = 400 
{
  "error": "invalid_param_type",
  "error_description": "The type of parameter routeId you provided is not valid for this request."
}{
  "error": "missing_param",
  "error_description": "employeeId parameter is missing"
}{
  "error": "invalid_date_format",
  "error_description": "Invalid date filter (not ISO-8601 formatted): rootingDate"
}{
  "error": "save_not_authorized",
  "error_description": "the specified route is already assigned to the specified employee"
}{
  "error": "save_not_authorized",
  "error_description": "Not all the assigned customers to the route are assigned to the employee"
}{
  "error": "save_failed",
  "error_description": "Failed to save instance"
} Failure case:response.status = 404 
{
  "error": "not_found",
  "error_description": "The employee with the id 999 doesn't exist."
} Failure case:response.status = 500 
{
  "error": "server_error",
  "error_description": "Oops! Something went wrong..."
}