CPPs are attributes that are monitored to detect deviations in standardized production operations and product output quality or changes in critical quality attributes.
Those attributes with a higher impact on CQAs should be prioritized and held in a stricter state of control.
[2] Data relating to CPP should be recorded, stored, and analyzed by the manufacturer.
One method of defining CPPs is to look at the effect of certain production processes on critical quality attributes.
Those production parameters which have a measurable effect on those quality attributes that have been identified as critical can be considered CPPs and must always be in a state of control.