Description:  ESI generated from an enterprise application such as financial systems, dynamic monitoring systems and more may not have a clear Custodian. The system may create, modify and destroy reports, bills, email, audits and more without any human interaction. As such, it functions as an Organizational Custodian and will need administrative or expert Custodians to identify, preserve, interpret and otherwise assist with the ESI.

Metric:  The metric is the time and effort required to identify the potentially relevant systems and what it will require to preserve and collect the ESI they produce.