Please fix this error - OrderDelete error 4108 - unknown ticket 84 for OrderDelete function - MT4

ticket1 = OrderSend( Symbol(),OP_BUYSTOP,LotSize,t1, Slippage,sl1,tp1,Order_comment,MagicNumber,0,clrGreen);
ticket2 = OrderSend( Symbol(),OP_SELLSTOP,LotSize,t2, Slippage, sl2,tp2,Order_comment,MagicNumber,0,clrRed);
}
for(int j=0; j<OrdersTotal(); j++)

 {
  //---if opened order is "Buy", close another pending order "Sellstop" and use trailing stop for opened "Buy" order
  if (OrderSelect(ticket1,SELECT_BY_TICKET)==true)
  if(OrderType()<=OP_BUY &&    // check for opened position 
     OrderSymbol()==Symbol())  // check for symbol
    {
     // delete pending order
     if (OrderDelete(ticket2)==true)
         Print("Deleting SELL_STOP"," Ordertype:",OrderType());
     return(1); 
    }
  //---if opened order is "Sell", close another pending order "Buystop" and use trailing stop for opened "Sell" order
  if (OrderSelect(ticket2,SELECT_BY_TICKET)==true)
  if(OrderType()<=OP_SELL&&    // check for opened position
     OrderSymbol()==Symbol())  // check for symbol
    {
     // delete pending order
     if (OrderDelete(ticket1)==true)
         Print("Deleting BUY_STOP"," Ordertype:",OrderType());
     return(1); 
     }