The sample in the study used to select a group (Cluster Sampling) which will be divided into 3 groups of 12 systems based on the relationship of each group. And a system of three systems, which will be studied is the Security Module System Dispute Manager Module System and Interchange Module System after a neat collect classify defects on test data for the past 3 system by conducting. The process begins by considering all the defects that occurred in the past.