REP: Reports and Enquiries Pack System Keys Appendix 2 34 System KeysValueDescription SLECTPREFX77sl-ect Prefix for other system keys 77CUSTSL-ECTUsed to add customer specific functions 77PFSWH****List of WH to exclude 77PFSWHRJRJWH to exclude from PFS 77PFSMRPINYESInclude MRP recos.