The Regulatory Proposal adjusts the credit portfolio rating methodology for development agencies and entities, through which these organizations classify their credit portfolio by risk stage. Specifically, in the formula defining the variable "ATR" (defined as the number of delinquencies observed as of the date of the reserve calculation), the references to time periods (weekly, biweekly, and monthly) are modified and replaced with days (7, 15, and 30). This adjustment aims to provide legal certainty in the methodology for determining the Probability of Default by explicitly specifying the number of days that constitute the time period. The objective is to stabilize and improve the accuracy of Preventive Estimates for Credit Risk, thereby reducing variations in the classification of risk stages and providing greater clarity and predictability in the regulatory environment, without requiring substantial modifications to the systems or controls of the entities.