In this matrix, the control deficiencies will be presented on the left, either because there are no controls, because they exist and do not work, or because they exist and are unnecessary.
On the right, the objectives of Internal Control, the administration systems and the areas of the entity will be titled.
An x will mark, in the corresponding boxes on the right, the impact of the control deficiency in such a way that in the last line the number of x that have affected each administration system and each area of the entity can be totalized. .
The systems and areas with more x will be the systems and the weak or critical areas of the audited entity, among which the operational auditor will select the most important according to the criteria derived from the results of Phase II and within these, will choose the more conducive to detailed examination.