2021-12-21 14:01:03[1640095263.3874] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 25.3113
    [size] => -46978
    [tif] => gtc
)
 Array
(
    [label] => RISK_LIMIT_EXCEEDED
    [detail] => increase value 1189529.938 while current (include pending orders) 0 and risk limit 500000
)

2021-12-21 17:01:02[1640106062.6798] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 24.8449
    [size] => 2040
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 6411.474894 while available 123.701220773315
)

2021-12-21 22:01:02[1640124062.2886] - new buy order: Array
(
    [contract] => DOT_USDT
    [price] => 25.4161
    [size] => 2039
    [tif] => gtc
)
 Array
(
    [label] => INSUFFICIENT_AVAILABLE
    [detail] => margin 6555.66362935 while available 123.701220773315
)