if(${INLETGRADESCORE},'Full AOP' and ${OUTLETGRADESCORE}, 'Full AOP' and ${DEPTHSCORE},'Full AOP' and ${SUBSTRATEMATCHSCORE},'Full AOP' and ${SUBSTRATECOVERSCORE},'Full AOP' and ${PHYSBARRSCORE},'Full AOP','No Barrier', 'Reduced AOP', 'NULL')
Hmmm I'm not sure what the argument is here but I think you meant to use "if(selected(" ? If not take a look at my example below:
if(${COUNTY} = 'PLA' and ${ROUTE}='65' and ${EndPM} <= 12.5, 'Marcy Pillett', 'N/A')
Mine has one answer if the argument is met which is 'Marcy Pillet' if it's not met then it's 'N/A'. Yours has too many answers. What I think you meant to do is
if(${INLETGRADESCORE} = 'Full AOP' and ${OUTLETGRADESCORE} = 'Full AOP' and ${DEPTHSCORE} = 'Full AOP' and ${SUBSTRATEMATCHSCORE} ='Full AOP' and ${SUBSTRATECOVERSCORE} = 'Full AOP' and ${PHYSBARRSCORE} = 'Full AOP', 'No Barrier', 'NULL')
So the answer if the argument is met would be 'No Barrier' otherwise if it's not met it's 'NULL'. Also notice the syntax is different from "if selected" I used equals sign.