Platform / The governance core
Threshold breaches
Somebody has to answer for a number that crosses red, and it should not be the person who produced the number. A policy can say so, and a spreadsheet cannot enforce it.
Drawn from the platform.
What changes
A value that crosses red raises a formal record the day it happens, and the person who produced the number cannot write the response to it.
In detail
A value that crosses a red threshold raises a formal breach record automatically, with its own lifecycle and versioned response. Two people are frozen onto it: the author of the original submission and the author of the value that crossed red. Neither can write the response. Without that, a benign figure could be submitted by one person and amended into a breach by another, with either of them writing the response.
A breach does not close itself when the next value comes in green. Closing one by hand needs a reason; reopening one is narrow, audited and reserved for the second line. An incident that has already happened is a risk event, recorded against the risk with its own record.
The evidence it leaves behind
The refusal is enforced on the server, which makes it a security control as well as a governance one. Segregation of duties, enforced rather than asserted