Gotta love 'management speak'...
The program is on track to meet seven of the eight KPPs. An issue with incorrect analysis/assumptions is hampering the attainment of the Sortie Generation Rate (SGR) KPP. The program office is examining the sensitivity of the SGR KPP to establish more operationally realistic ground rules and assumptions. As a result, the program plans to reassess SGR.
i.e The rules that we set and agreed to meant that the playing field is too long, so we are in the process of resetting the goalposts to ensure that we can get within scoring distance.