Only three?

In my current branch (may not be committed) I have this function:

        std::string httpStatusCodeString(HttpStatusCode code)
        {
          switch (code)
          {
          case SccOk:                                return "OK";
          case SccBadRequest:                        return "Bad Request";
          case SccForbidden:                         return "Forbidden";
          case SccContextElementNotFound:            return "No context element found"; // Standard HTTP for 404: "Not Found"                                              
          case SccBadVerb:                           return "Method Not Allowed";
          case SccNotAcceptable:                     return "Not Acceptable";
          case SccLengthRequired:                    return "Length Required";
          case SccRequestEntityTooLarge:             return "Request Entity Too Large";
          case SccUnsupportedMediaType:              return "Unsupported Media Type";
          case SccSubscriptionIdNotFound:            return "subscriptionId does not correspond to an active subscription"; // FI-WARE                                     
          case SccMissingParameter:                  return "parameter missing in the request";                             // FI-WARE                                     
          case SccInvalidParameter:                  return "request parameter is invalid/not allowed";                     // FI-WARE                                     
          case SccErrorInMetadata:                   return "Generic error in metadata";
          case SccEntityIdReNotAllowed:              return "Regular Expression for EntityId is not allowed by receiver";
          case SccEntityTypeRequired:                return "EntityType required by the receiver";
          case SccAttributeListRequired:             return "Attribute List required by the receiver";
          case SccReceiverInternalError:             return "Internal Server Error";
          case SccNotImplemented:                    return "Not Implemented";
          }
        }