All those variables (_OVR, _MA, _KNUM) are Siemens standard GUD variables that should be installed along with the probe cycles. Depending on the version of system software, thsy could be in GUD5 and 6, GUD7_MC, or PGUD.
Look in the Definitions folder in the Services area. If any of these are listed but not loaded, activate them.
If they are not there, you need to get them from wherever you got the measuring cycles. If you have a PCU50 running HMI Advanced, they are stored in the Archive/Cycle-Archives/Meas.-cycles folder in DEFINES.ARC.