There may be some Problem in Module creation since it might differ little bit to that formula given and hence You are encountering the error..
You Can follow this step , it worked for me
Follow the syntax and dont blindly copy formula from learning...
Example (Here is the formula given in learning): IF 'SYS09 Version Details'.Forecast? THEN 'EMP02 Employee Expenses'.Headcount[SUM: 'SYS08 Employee Details'.Country] ELSE 'DATA01 P&L Actual and Budget'.Headcount
Instead the alternate way is following this step if encountered error
IF(First Type this ) 'SYS09 Version Details'.Forecast?(Here in this,locate this in the module and this automatically gets added to the formula ) THEN (type this) 'EMP02 Employee Expenses'.Headcount(Locate this in module and this adds up in the formula)
Follow this step in the entire formula...Use the proper syntax and locate module ..