We recommend that you validate your studies whenever you are unsure whether you are meeting study requirements, how many credits you are missing in each group of your study plan, etc., in order to take the state exam.
But if you're totally lost, definitely don't be afraid to email your secretary. It's definitely better to solve or prevent any study problems in time.
You can do the validation in SIS: Summary of Exam Results → Validations → Request for validation: before state final examination.
This is what it looks like:
Simply see how many credits you are missing in which group and what you should focus on.
You cannot take the state exam without successfully completing this validation.