Automate FI (OB52)/CO(OKP1) posting period

Hi,

We would like to automate the FI & CO period opening procedure by batch process. Iu2019ve two Qs;

1) OB52: The standard programs RFPERIOD_OPEN and RFPERIOD_CLOSE do not have dynamic date selection option while creating variant.

2)OKP1 : There is no option of creating variant in the program SAPMKCSP

Can anyone throw some light on the process to automate FI/CO posting periods?

Thanks,

Nirav