The Railway Recruitment Boards (RRB) have opened a special Modification Window for Course Completed Act Apprentices (CCAAs) under CEN No. 08/2024 commonly known as the RRB Group D recruitment. This window is open from June 17, 2026 to June 23, 2026.

RRB Group D CCAA Modification Window 2026 — Key Highlights
If you are a CCAA trained in a Railway Establishment and appeared in the Computer Based Test (CBT) but did not update your NCVT examination marks in the online application, this is your last chance to do so.
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| Detail | Information |
|---|---|
| Recruitment Body | Railway Recruitment Boards (RRB) |
| Notification | CEN No. 08/2024 |
| Modification Window Opens | 17 June 2026 (00:01 hrs) |
| Modification Window Closes | 23 June 2026 (23:59 hrs) |
| Who Can Apply | CCAA candidates who appeared in CBT but did not furnish NCVT marks |
| Official Body | Ministry of Railways, Government of India |
Who Are CCAAs? Why Do They Get Special Benefits?
Course Completed Act Apprentices (CCAAs) are candidates who have completed their apprenticeship training in a Railway Establishment under the Apprentices Act.
CCAAs trained in Railway establishments enjoy two major advantages in the RRB Group D selection process:
- Additional Weightage of Marks — Their NCVT (National Council for Vocational Training) examination marks are given due weightage when preparing the final merit list after the CBT.
- Exemption from Physical Efficiency Test (PET) — CCAAs trained in Railway Establishments are completely exempt from the PET, which is otherwise mandatory for other candidates.
These are significant benefits that can make a real difference in your final selection. That is why updating your NCVT details in this modification window is absolutely critical.

Why Was This Modification Window Opened?
The background to this window goes back to a notice issued on February 3, 2025, which instructed two categories of CCAA candidates:
- Category 1: CCAAs who had already received their National Apprenticeship Certificate (NAC) from NCVT at the time of application were asked to fill in their training duration, certificate details, and marks in the online application.
- Category 2: CCAAs who had appeared in the NCVT examination before the last date of application but whose results were not yet declared were advised to fill in the date of their examination and flag that results were awaited.
However, many eligible CCAA candidates who appeared in the CBT still had not furnished their NCVT marks in the online application. To help these candidates claim their rightful benefits under the CCAA quota, the Railway Recruitment Boards have now opened this dedicated modification window.
Who Is Eligible to Use This Modification Window?
This facility is only for candidates who meet ALL three of the following conditions:
- You are a CCAA candidate who appeared in the CBT under CEN No. 08/2024.
- You had not furnished your NCVT examination marks in the online application at the time of applying.
- You had indicated the date of your last NCVT examination in the application.
Important: If you do not meet all three conditions above, you are not eligible to use this modification window.
What Can You Update in the Modification Window?
During the modification window (June 17–23, 2026), eligible candidates can:
- Fill in their NCVT certificate details (if not done earlier)
- Update their NCVT marks obtained in the examination
- Enter their National Apprenticeship Certificate (NAC) details
This update will enable RRB to calculate the NCVT weightage applicable to your score under the CCAA quota, which will be factored into the final merit list.
What Happens If You Miss This Window?
This is extremely important: If you fail to update your certificate details and marks during this modification window, you will NOT be treated as a “CCAA Trained in Railway Establishment and possessing NAC granted by NCVT.”
This means you will:
- Lose the marks weightage benefit in the final merit list
- Not be considered for the CCAA quota reservation
- Likely still be required to go through the Physical Efficiency Test (PET)
Missing this window could significantly hurt your chances of selection, especially in a highly competitive recruitment like RRB Group D. Do not miss this deadline.
Will the NCVT Details Be Verified?
Yes. According to the official notice, NCVT examination details filled by candidates will be verified during the Document Verification (DV) stage. Your candidature will be subject to the correctness of the details you provide.
How to Use the RRB Group D CCAA Modification Window — Step-by-Step
- Visit the official RRB website relevant to your zone (e.g., rrbcdg.gov.in, rrbmumbai.gov.in, etc.)
- Log in to your CEN 08/2024 application using your registration number and date of birth/password.
- Navigate to the Modification Window or CCAA Details Update section.
- Enter your NCVT certificate number, marks obtained, date of examination, and other required details.
- Upload supporting documents if prompted.
- Review all details carefully and submit before June 23, 2026 (23:59 hrs).
- Save/download the confirmation for your records.
Note: Always use the official RRB website for your zone. Beware of third-party sites claiming to offer application services.
Important Dates
| Event | Date |
|---|---|
| Official Notice Date | June 16, 2026 |
| Modification Window Opens | June 17, 2026 (00:01 hrs) |
| Modification Window Closes | June 23, 2026 (23:59 hrs) |
| Document Verification | To be announced |
Frequently Asked Questions (FAQs)
Q1. Can I use this window if I already filled my NCVT marks during the original application?
No. This window is specifically for candidates who appeared in the CBT but had NOT furnished their NCVT marks earlier and had indicated the date of their NCVT examination.
Q2. I appeared in the NCVT exam but my result was not declared at the time of application. Am I eligible?
Yes, provided you appeared in the CBT and had indicated your NCVT examination date in the application with a flag that results were awaited.
Q3. Is the modification window available for all RRB zones?
Yes, this notice is issued by all Railway Recruitment Boards collectively under CEN No. 08/2024.
Q4. What is the benefit of updating NCVT marks?
Updating your NCVT marks allows RRB to give you the additional marks weightage applicable under the CCAA quota and also confirms your exemption from the Physical Efficiency Test (PET).
Q5. What documents should I keep ready?
Keep your National Apprenticeship Certificate (NAC) issued by NCVT, NCVT mark sheet, training duration proof, and Railway Establishment training documents handy.