Closed Major?

Hi,
So I started my UCLA application today, but when I went to click communications as my major it said it was a closed major. I don’t understand what this means. Can anybody help?
Thanks!

http://admission.universityofcalifornia.edu/how-to-apply/check-majors/by-campus/la/index.html

UCLA Students: Only regularly enrolled UCLA students may apply for admission to the Communication Studies major. Students must have at least 45 letter-graded units completed at UCLA by the close of Summer Session A (8/4/17) with a minimum of 2 UCLA letter-graded courses from the major requirements, either lower or upper division. It is not necessary to complete all of the lower division courses before applying. All work pertaining to the major must be taken for a letter grade.

There is no minimum grade point average required for admission.
Admission decisions are based solely on the current year’s pool of applicants.
The Admission Committee’s criteria for acceptance are overall academic proficiency and courses relevant to the major. Please click here for more information on the application process and to view the essay questions.
You can view the application results by clicking on this link.

General Information

Students not admitted at the sophomore or junior level may reapply the following year.
If you have 140 units or more, please consult with a counselor before applying.
Prospective double majors must be independently accepted into the CS Department; there is no automatic acceptance.
Please keep in mind that Communication Studies is an extremely competitive major so it is recommended to have a back-up major in place.

The Admissions Committee gives detailed attention to every application it receives, and its decisions each year are final. Other than to correct an error in the information it originally evaluated, the Admissions Committee is not able to comply with appeals from applicants for a second review.
Please DO NOT submit letters of recommendation — they will not be accepted.

Thank you! When I searched it said a major is closed when they have already received too many qualified applicants, which I didn’t quite fully get why they would do that.