anchor.diff:          {
               "documents": [
                   {
  -                    "sequenecnum": "Sequence Number",
  +                    "sequencenum": "Sequence Number",
                       "title": "Title",
                       "explanation": "Brief explanation",
                       "updatingtime": "Updating Time",
  
positive.code:         {
              "message": "Failure",
              "username": "Request username"
          }
negative.code:         {
              "assignments": [
                  {
                      "sequencenum": "Sequence Number",
                      "title": "Title",
                      "detail": "Detail of the assignment",
                      "startdate": "Start date",
  