Because processing rules permanently affect Analytics data, processing rules administrators are required to receive certification training in Adobe Analytics, and be familiar with all sources of data for your report suites (standard web sites, mobile sites, mobile apps, Data Insertion API, and so on). Knowledge of the context data variables and standard variables populated in various platforms will help prevent accidental deletion or alteration of data.
It is recommended that a limited group of administrators (usually 2-3) have access to processing rules so that all requested changes are centrally planned, edited, and approved. And it's always best to have more than one administrator assigned for redundancy.
How to take the Processing Rules Certification Test
Expect to spend about ten minutes creating a login and enabling a free test. Then, expect an additional 20-40 minutes answering questions.