circular dependency

plse try this

level-FDunit = 
VAR _t1 = 'incentive_cal[Employee Id]
RETURN
CALCULATE(
(IF([FDunitcurrent_mnth]>=3,l,
IF([FDunitcurrent_mnth]>=5,2,3))),
   FILTER (ALL(incentive_cal),incentive_cal[Employee Id]=_t1))