How is ageing degradation applied on Vmp and Imp

[pddd]

Hello,

I'm interested in the ageing degradation calculation method. I would like to know how is the degradation taken into account with respect to the voltage and current parameters of the module.

Indeed, PVsyst asks for a global degradation factor or warranty factors which concern the power degradation, but how do these inputs affect the Vmp and the Imp of the module through the years ? Is it linked to the Imp and Vmp RMS dispersion ?

Thanks a lot for your help, best regards,