1. Appearing in CUET Subjects Not Studied in Class 12

Delhi University (DU) enforces a strict subject-mapping rule: candidates must only appear in subjects they passed in their Class 12 board exams. Even if NTA allows you to select any subject, DU will award zero marks for any domain paper not listed on your Class 12 marksheet. For instance, choosing Physical Education or Entrepreneurship in CUET when you had Informatics Practices in school will invalidate those scores for DU merit calculation.

2. Overlooking the Mathematics Mandate for Top Courses

Many commerce students assume Accountancy can substitute for Mathematics across all finance and economics programs. While B.Com (Hons) at DU accepts either Mathematics/Applied Mathematics OR Accountancy/Bookkeeping (along with one language and two other domains), other marquee programs like B.A. (Hons) Economics, BMS, and BBA (FIA) strictly require Mathematics/Applied Mathematics. Dropping Math limits your eligibility strictly to general commerce degrees.

3. Skipping the General Test (Section III)

Students aiming exclusively for traditional B.Com degrees often omit the General Aptitude Test (GAT) to reduce their preparation load. Doing so automatically eliminates you from:

• Management programs like BMS / BBA (FIA) / BBE at DU (which mandate Language + Math + General Test).
• Professional courses and universities like BHU (B.Com Hons), which require the General Test alongside Accountancy and Business Studies.
• High-value backup options in central and state universities that use GAT as a core screening component.

4. Misinterpreting Language Combinations (Section IA & IB)

A common error is treating language selection as a mere qualifying formality. In university systems like DU’s CSAS, the language score (from List A / Section IA) is directly calculated as a scored component in your 4-subject merit aggregate. Furthermore, picking a foreign or classical language from Section IB without verifying whether your target course requires a primary Section IA language (like English or Hindi) can disqualify your aggregate score.

5. Restricting University & Program Selections on the NTA Portal

During the initial CUET registration, some students select only 1 or 2 universities (e.g., only DU), believing they can add others later without penalty. While university-level portals (like DU CSAS, BHU SAMARTH) handle final counseling, you must ensure all potential universities and relevant programs (B.Com Hons, B.Com Pass, BMS, BBA-FIA, BBE, Economics Hons) are selected during NTA registration to prevent data synchronization issues during counseling rounds.

Recommended Subject Set	Covers These Target Programs
English (Language)	Foundation for DU, BHU, AU, Jamia, and Ambedkar University.
Accountancy	Core domain for B.Com (Hons), B.Com (Pass), and BHU Commerce.
Business Studies / Economics	High-scoring domains to complete the 3-domain requirement for DU.
Mathematics / Applied Math	Unlocks B.A. Economics (Hons), BMS, BBA-FIA, and BBE.
General Test (GAT)	Opens professional management, vocational programs, and BHU/AU eligibility.