title: AADB2C90083: The request is missing required parameter: grant_type
body: <p>I am trying to configure the ROPC flow in Azure Active Directory B2C using a custom policy mentioned in the below URL.</p>
  
  <p><a href="https://docs.microsoft.com/en-us/azure/active-directory-b2c/ropc-custom" rel="noreferrer">https://docs.microsoft.com/en-us/azure/active-directory-b2c/ropc-custom</a> </p>
  
  <p>But I am getting the below error while testing the ROPC policy.
      {
      "error": "invalid_request",
      "error_description": "AADB2C90083: The request is missing required 
       parameter: grant_type.\r\nCorrelation ID: b4153dfe-4296-4b68-850f-ee30ac4d86b0\r\nTimestamp: 2019-08-02 11:53:23Z\r\n"
  }</p>