The SRPE is not a performance evaluation system. 90 days is the minimum for the rater and SR. This provision has been in effect since the initial roll out of the SRPE in 2001. The first line supervisor has the ability, within the CAPPMIS system, to identify an alternate SR, within the same chain of command, to be the SR providing that he/she is senior in grade/position to the AAW member and has been in that position for 90 days.