It’s a bunch of complex validations.

Example:

This second validation in the list of possible errors will evaluate whether the current date is within the cell’s allowed enrollment dates:

This other one evaluates whether the same course has already been taken earlier:

For each validation, when the group evaluates to a yes, it will be visible to reveal the error text.

Then, the counter will look up each error text’s yes/no and convert that to a sum of numbers:

What matters is there’s a number in the latter group, and I want to sum that number up a the parent level.