Is it possible to do a ototoca order?

[michaelmech]

Is it possible to do a one triggers one triggers one cancels another order? I tried implementing it following the intuition of the sample orders as follows:

def two_trail_order(take_profit,stop_loss,ticker,negate_size,size,stop_size,TDSession,account_id,short=False):
  print('two_trail_order')
  negate_size=abs(negate_size)
  stop_size=abs(stop_size)
  take_size=stop_size
  size=abs(size)
  ticker=ticker.upper()
  price=TDSession.get_quotes([ticker.upper()])[ticker.upper()]['lastPrice']
 
  if not short:
    
    instruction='BUY'
    stop_instruction='SELL'
    negate_instruction='BUY_TO_COVER'
    take_profit+=price
    
  else:
    
    instruction='SELL_SHORT'
    stop_instruction='BUY_TO_COVER'
    negate_instruction='SELL'
    take_profit=price-take_profit
  
  take_instruction=stop_instruction
  take_profit=as_currency(take_profit)
  
  trigger_trigger_order={
    "orderStrategyType": "TRIGGER",
    "session": "NORMAL",
    'duration':'DAY',
    "orderType": "MARKET",
    "orderLegCollection": [
      {
        "instruction": negate_instruction,
        "quantity": negate_size,
        "instrument": {
          "assetType": "EQUITY",
          "symbol": ticker
        }
      }
    ],
    
    "childOrderStrategies": [
      {
    "orderStrategyType": "TRIGGER",
    "session": "NORMAL",
    'duration':'DAY',
    "orderType": "MARKET",
    "orderLegCollection": [
      {
        "instruction": instruction,
        "quantity": size,
        "instrument": {
          "assetType": "EQUITY",
          "symbol": ticker
        }
      }
    ],
    
    "childOrderStrategies": [
       { 
      "orderStrategyType": "OCO",
      "childOrderStrategies": [
        {     
          "orderType": "LIMIT",
          "session": "NORMAL",
          "duration": "GOOD_TILL_CANCEL",
          "price": take_profit,
          'orderStrategyType': 'SINGLE',
          "orderLegCollection": [
            {
              "instruction": take_instruction,
              "quantity": take_size,
              "instrument": {
                "assetType": "EQUITY",
                "symbol": ticker
              }
            }
          ]
        },
        {
          
          "orderType": "TRAILING_STOP",
         "stopPriceOffset": stop_loss,
         "stopPriceLinkType": 'VALUE',
         'stopPriceLinkBasis': "ASK",
         'stopType': 'STANDARD',
          "session": "NORMAL",
          "duration": "GOOD_TILL_CANCEL",
          "orderStrategyType": "SINGLE",
          "orderLegCollection": [
            {
              "instruction": stop_instruction,
              "quantity": stop_size,
              "instrument": {
                "assetType": "EQUITY",
                "symbol": ticker
              }
            }
          ]
        }
      ]
    }
    ]
  }
    ]
  }
  
  
  TDSession.place_order(account_id,trigger_trigger_order)

However, it gives me this error when I try to launch this order:
"error" : " An unexpected server error occurred while trying to process the request. The associated error referenceID is 979607e4-7391-49f1-865b-bc64fcb8528d-02"