I get a "Function statements require a function name" error message when I open a reference to review

The error message "Function statements require a function name" may appear if you use a calculated question with an anonymous function in a Hierarchical Data Extraction (HDE) Level.

HDE is a configuration where different Forms are related by using functions on the back end. The named function must be used when using calculated questions with such workflows.

When adding a name to a function, instead of:

function() {
}
(); 

Use the following function:

function Name() {
}
Name(); 

Note: each function's name in a Level should be unique.