title: Getting 404 in D2L API
body: <p>I am trying to create/update LTI link for course but getting 404 when I make request. I am trying this from <a href="https://apitesttool.desire2learnvalence.com" rel="nofollow">https://apitesttool.desire2learnvalence.com</a> using Instructor credentials(I can confirm it by calling whoami API). Instructor is enrolled in course (org_unit_id is 6689). Test sandbox is hosted at <a href="http://vxxxxxxxx" rel="nofollow">http://vxxxxxxxx</a>.<strong>brightspacetrial</strong>.com.  </p>
  
  <p><code>
  POST /d2l/api/le/unstable/lti/link/6689
  Content Type:application/json 
  Data: 
  {
      "UseToolProviderSecuritySettings": false,
      "Title": "Tiltl2",
      "Url": "https://127.0.0.1:8000/lti/d2llaunch12/",
      "Description": "&lt;p&gt;Points to Local Server1&lt;/p&gt;",
      "Key": "",
      "IsVisible": true,
      "SignMessage": true,
      "SignWithTc": true,
      "SendTcInfo": true,
      "SendContextInfo": true,
      "SendUserId": true,
      "SendUserName": true,
      "SendUserEmail": true,
      "SendLinkTitle": true,
      "SendLinkDescription": true,
      "SendD2LUserName": false,
      "SendD2LOrgDefinedId": false,
      "SendD2LOrgRoleId": false,
      "CustomParameters": null
  }
  Response: Unknown error occured (HTTP status 404)
  </code>
  I have used correct route and I do get correct response in GET request.<br>
  <code>GET /d2l/api/le/(version)/lti/link/(orgUnitId)/(ltiLinkId)
  GET /d2l/api/le/(version)/lti/link/(orgUnitId)/</code>
  I am not sure why it is giving 404. Please help</p>