The most recent (or current) modification TransactTime (60) reported on an Execution Report <35=8> for the order.

The OrigOrdModTime (586) is provided as an optional field on Order Cancel Request <35=F> and Order Cancel/Replace Request <35=G> to identify that the state of the order has not changed since the request was issued.

This is provided to support markets similar to Eurex and A/C/E.