There are different limitations on the position size for each symbol and leverage. Order might be closed with this status when the order amount is larger than this maximum threshold for the symbol with the selected leverage.
Please note that in some cases the canceled order might have a valid position size but still be canceled when the accumulated symbol position surpasses the maximum size that is allowed in the exchange.
For example, if a position size limitation is 50K and we already have 45K of a position in the exchange, opening a 10K order will be invalid as it crosses the overall amount allowed for that symbol as 45K + 10K > 50K.