A combination of type 3-6 controls above may help reduce the number of type 1 & 2 controls (transaction-level) that require assessment for particular risks, especially in lower-risk, transaction-intensive processes.
By incorporating type 3-6 controls, one can reduce the need for type 1 & 2 assessments (transaction-level) related to certain risks, especially in processes that are of lower risk but involve many transactions.