Place SL and Target With GTT

How to place a stop loss and target using a GTT order, the entry is already placed as a regular order. I just need to add target and stoploss using GTT. But according to your doc entry is required when I already placed the order, what will be the entry? If possible, please share the response to place only the target and SL order

@Ushnota ??

@Upstox ??