HI,

To get admission in MBA you need to have graduation degree,however CA certificate is not equivalent to Graduation degree. CA and Graduation can not be compared, as the former is a certificate course and the later is a degree course

SO in addition to graduation degree like bcom,bsc, ba ,bba etc ,if you hv CA certificate ,then yes you can get seat in OU for mba provided you need to score good as the cutoff of rank for OU is very low below 200 rank would be great

Hope its clear

GOOD LUCK