Grant_Type Not Supported When Trying to Login to REST API

Symptom

Receiving the following when trying to login to REST API at https://restapi.ultradns.com/:

{
  "errorCode": 60005,
  "errorMessage": "grant_type not supported",
  "error": "unsupported_grant_type",
  "error_description": "60005: grant_type not supported"
}

Root Cause

Username and Password were not supplied via body with x-www-form-urlencoded

Steps to Resolution

1. Login to REST API in one of the following ways
   1. Option 1
      1. Postman
      2. Select POST as method
      3. Enter https://restapi.ultradns.com/v2/authorization/token as URL
      4. For Body use:
         1. Click radio button for x-www-form-urlencoded
         2. Add the following
            1. grant_type password
            2. username {insert your username}
      5. password {insert your password}Click Send
   2. Option 2
      1. CURL

curl -X POST -H "Cache-Control: no-cache" -H "Postman-Token: [Removed]" -H "Content-Type: application/x-www-form-urlencoded" -d 'grant_type=password&username=[Removed]&password=[Removed]' "https://restapi.ultradns.com/v2/authorization/token"