RRB Group D CCAA Modification Window 2026 - Last Date to Update NCVT Marks (17–23 June)

The Railway Recruitment Boards (RRB) have opened a special CCAA Modification Window 2026 for candidates under CEN No. 08/2024, popularly known as RRB Group D recruitment. The window is open from 17 June 2026 (00:01 hrs) to 23 June 2026 (23:59 hrs), allowing eligible Course Completed Act Apprentice (CCAA) candidates who appeared in the CBT but had not entered their NCVT examination marks to update this information online before the deadline closes.

This is a one-time, time-bound opportunity. If you are a CCAA candidate and missed filling in your NCVT marks at the time of applying, this article explains exactly who can use this window, what you need to update, the step-by-step process, and what happens if you miss the deadline.

Click Here: RRB CCAA Modification Window 2026

RRB CCAA Modification Window 2026 - Key Highlights

This section gives a quick snapshot of the most important facts about the modification window the recruitment body, notification number, opening and closing dates, and who it applies to so you can confirm at a glance whether this update concerns you.

Who Are CCAAs and Why Does This Update Matter?

Before looking at eligibility and steps, it helps to understand who qualifies as a CCAA and why updating NCVT details carries real weight in the RRB Group D selection process.

Course Completed Act Apprentices (CCAAs) are candidates who have completed their apprenticeship training in a Railway Establishment under the Apprentices Act. CCAAs trained in a Railway Establishment receive two specific advantages over general candidates in the RRB Group D selection process:

• NCVT marks weightage: Marks obtained in the National Council for Vocational Training (NCVT) examination are given due weightage while preparing the final merit list after the CBT.
• PET exemption: CCAAs trained in Railway Establishments are fully exempt from the Physical Efficiency Test (PET), which is mandatory for all other Group D candidates.

Because these two benefits directly affect a candidate's final merit position and exam process, any CCAA candidate who has not yet recorded their NCVT marks needs to act within this window to remain eligible for them.

Why Was the CCAA Modification Window Opened?

This section explains the background that led RRB to open this window, helping candidates understand whether their specific situation matches the criteria.

The matter traces back to an earlier notice dated 3 February 2025, which addressed two categories of CCAA applicants:

• Category 1: CCAAs who had already received their National Apprenticeship Certificate (NAC) from NCVT at the time of application were instructed to enter their training duration, certificate details, and marks directly in the online form.
• Category 2: CCAAs who had appeared for the NCVT examination before the application deadline, but whose results were not yet declared, were advised to fill in their exam date and flag the result as "awaited."

Despite this earlier instruction, a number of eligible CCAA candidates who went on to appear in the CBT still had not entered their NCVT marks in the system. To allow these candidates to claim the benefits they are entitled to under the CCAA quota, RRB has now opened this dedicated modification window from 17 to 23 June 2026.

Who Is Eligible for the RRB CCAA Modification Window 2026?

This section lists the exact eligibility conditions, since only candidates meeting all three criteria together can use this facility.

A candidate can use this modification window only if all three of the following conditions are met:

1. The candidate appeared in the Computer Based Test (CBT) under CEN No. 08/2024.
2. The candidate had not entered their NCVT examination marks in the original online application.
3. The candidate had indicated the date of their NCVT examination in the application, typically with a "results awaited" flag.

If even one of these conditions is not met for instance, if you did not appear in the CBT, or if your NCVT marks were already filled in correctly at the time of application you are not eligible to use this window.

What Can Be Updated in the Modification Window?

This part covers exactly what information eligible candidates are permitted to add or change during the 17–23 June window.

During this window, eligible CCAA candidates can:

• Fill in NCVT certificate details, if not entered earlier
• Update the marks obtained in the NCVT examination
• Enter National Apprenticeship Certificate (NAC) details

Once submitted, RRB uses this information to calculate the applicable NCVT weightage for the candidate's CCAA quota benefit, which then feeds into the preparation of the final merit list.

How to Update NCVT Details: Step-by-Step Process

This section walks through the practical process of making the update, from logging in to final submission.

1. Visit the official RRB website for your respective zone, or the centralised application portal as indicated in your candidature.
2. Log in to your CEN 08/2024 application using your registration number and password/date of birth.
3. Navigate to the "Modification Window" or "CCAA/NCVT Details Update" section.
4. Enter your NCVT certificate number, marks obtained, date of examination, training duration, and any other requested details.
5. Upload supporting documents if the system prompts you to do so.
6. Carefully review every entry before submission, since corrections cannot be made once the window closes.
7. Submit the form before 23 June 2026, 23:59 hrs, and save or download the confirmation/screenshot for your records.

Always complete this process only through the official RRB website for your zone or the application portal linked in the official notice. Avoid third-party websites claiming to offer "application update services," as these are not authorised by RRB.

What Happens If You Miss the Modification Window?

This section explains the consequences of not updating NCVT details within the given time frame, which is critical information for any eligible candidate still undecided about acting.

Missing this window has direct consequences for a CCAA candidate's selection prospects. If you do not update your certificate details and marks during the 17–23 June period, you will not be treated as a "CCAA Trained in Railway Establishment possessing NAC granted by NCVT." As a result, you will:

• Lose the NCVT marks weightage benefit in the final merit list
• Not be considered under the CCAA quota for this benefit
• Likely be required to appear for the Physical Efficiency Test (PET), which CCAA candidates would otherwise be exempt from

Given how competitive RRB Group D recruitment is, losing either of these advantages can materially affect your final selection chances. There is no indication of any extension beyond 23 June 2026, so candidates are advised not to wait until the last day.

Will NCVT Details Be Verified Later?

This short section addresses a common follow-up concern: whether the information submitted now will be checked later in the process.

Yes. As per the official notice, all NCVT examination details filled in by candidates during this modification window will be verified at the Document Verification (DV) stage. Candidature remains subject to the accuracy of the information submitted, so candidates should ensure that certificate numbers, marks, and dates exactly match their original NAC certificate and mark sheet before final submission.

Documents to Keep Ready

Having these documents on hand before you start the update process will make the modification quicker and reduce the risk of entry errors.

• National Apprenticeship Certificate (NAC) issued by NCVT
• NCVT mark sheet showing marks obtained
• Proof of apprenticeship training duration
• Railway Establishment training-related documents

Important Dates