if(Limits.getQueries() < Limits.getLimitQueries()){
              upsert UpdateData;
              }
              else if((Limits.getQueries() >= Limits.getLimitQueries()))
              {
                  RestContext.response.statusCode = 429;
                  UpdateError[] err = new UpdateError[]{
                  new UpdateReturnError(UpdateData.Id, 'Too many Requests', 'Error updating MessageID ' + msg.MessageId)
                };
                RestContext.response.responseBody = Blob.valueOf(JSON.serialize(err));
                RestContext.response.addHeader('Content-Type', 'application/json');
                break;
              }
            }