In PF1 -> The SBS RtR Specialists from CO transversal team are responsible for the opening and closing the periods through the transaction OKP1 for CO.

IN WP1 -> Only few users of SBS RtR have access to OKP1 and  ALL the periods from 2010 forward, should be opened for CA Z001, Z006, Z013, Z025, Z026 and Z028.