At this point, such a standard has not been set because this practice is new. Case law in the private sector suggests that responsible individuals need only check matters that are easily verifiable and investigate matters within their actual knowledge. We suggest that you discuss this issue with the campus controller.
A best practice we are comfortable recommending was initiated by several deans last year who met with line staff directly responsible for day-to-day operation of financial and accounting systems and went over the letter with them, requesting to be advised that any problems had been brought to the attention of appropriate Campus Managers.