GST REG-14 Non-Core Amendment: OTP in 3 Days or No ARN
After filing a non-core GST registration amendment (REG-14), complete OTP verification within 3 days of submission, or no ARN is generated and the changes are not applied. Principal Place of Business changes need officer approval; other (non-core) changes are auto-approved. Verify at Services, Registration, OTP Verification for GSTIN.
After you submit a GST registration amendment (Form GST REG-14), you must finish OTP verification within 3 days of submission. If you do not, no ARN is generated, the status shows "ARN not Generated", and the amended details are not updated in your registration.
The GST portal manual for non-core amendments states this rule. The common mistake is treating the submit screen as the end: after validation the status reads "OTP Verification Required", and the amendment stays incomplete until the OTPs are done.
Which GST registration amendments need officer approval?
Changes to the Principal Place of Business (PPoB) are core-field amendments and need the tax official's approval. The official then approves or rejects, and an approval order (REG-15) appears on your dashboard along with the amended certificate. You will get an SMS and an email.
Everything else is a non-core field and is auto-approved: the manual gives authorised signatory details and promoter, partner or karta details as examples. The updated details go into the GST database without an officer. The portal manual does not state how many days an officer takes on a core amendment, so do not plan around a number.
| Type of change | Officer approval? |
|---|---|
| Principal Place of Business | Yes, REG-15 on approval |
| Authorised signatory details | No, auto-approved |
| Promoter, partner, karta details | No, auto-approved |
| Any other non-core field | No, auto-approved |
Source: GST Portal, Manual: Amendment of Non-Core Fields and Amendment of Core Fields (tutorial.gst.gov.in, checked November 2026). Auto-approval does not remove the OTP step.
Supporting documents are often scanned PDFs. If a file is too heavy for the upload field, run it through Compress PDF and stay within the limit the field shows. Separately, if you are also working on your own return, the Income Tax Calculator gives an estimate. Confirm anything about your own filing with a GST professional.
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Where is the OTP verification option, and what do I enter?
The manual puts it under Services, Registration, OTP Verification for GSTIN. The page asks for the GSTIN, the email address you gave in the amendment application, and a CAPTCHA.
- Go to Services, then Registration, then OTP Verification for GSTIN.
- Enter your GSTIN, the email from the application, and the CAPTCHA.
- Choose your member type from the drop-down and click Validate. Pick Both if you are the promoter or partner and the Primary Authorised Signatory.
- Enter the CAPTCHA again, click Get OTP, then enter the mobile OTP and the email OTP.
- Click Proceed. A success message and an email and SMS confirm the verification.
The Application Type field is fixed as "Non-Core Amendment" and cannot be edited.
Who has to verify?
The Primary Authorised Signatory is selected for OTP verification by default and cannot be unticked. You must also pick at least one promoter or partner. Once one is chosen, the other promoters are greyed out and show "NA". If the promoter and the signatory are the same person, only that person's details appear.
A non-resident promoter or partner cannot be selected for OTP verification. The checkbox stays disabled, so choose another promoter or partner. When an email or mobile number is changed, the OTPs go to the updated address and number, and the manual says the common OTP is valid for 10 minutes only.
Why is my ARN not generated?
The manual's reason is that the OTP verification was not completed within 3 days of submitting REG-14. In that case the system does not generate the ARN, the status becomes "ARN not Generated" and the amended details are not updated in the registration. The manual does not say what to do next, so ask the GST helpdesk or your professional before refiling.
To check where you stand, open Dashboard, Services, User Services, My Saved Applications, and click the "i" icon next to the application to see the status meaning.
Time limit for amendments and trade name changes
The portal manuals quoted here do not state a filing deadline for making an amendment, so check the CGST Rules or a GST professional for that. The only time limit in the manual is the 3-day OTP window after submission.
On trade name: the manual treats only Principal Place of Business as a core field and everything else as non-core. It does not say whether any change leads to a physical verification, so it is best not to assume either way.
Checklist before you submit
- Know whether your change is core (PPoB) or non-core.
- Keep the mobile and email of the signatory and one promoter or partner within reach for the next 3 days.
- Note your GSTIN and the exact email used in the application.
- Check supporting PDFs are clear and within the field's size limit. For document limits at registration, see GST registration document upload size.
- For address proof questions, read GST registration home address proof.
This is a portal guide, not tax advice. Confirm your own case with a GST professional or the helpdesk on gst.gov.in.
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Frequently asked questions
Which GST registration amendments need officer approval?
Changes to the Principal Place of Business are core-field amendments and need the tax official's approval, with an approval order in REG-15. Other non-core changes, such as authorised signatory or promoter details, are auto-approved, per the GST portal manuals.
What happens if I don't finish OTP verification within the three-day window?
The system does not generate the ARN, the application status becomes ARN not Generated, and the amended details are not updated in your registration. The manual does not say what to do next, so check with the GST helpdesk or a professional before refiling.
Where is the OTP verification option on the GST portal?
Go to Services, then Registration, then OTP Verification for GSTIN. Enter your GSTIN, the email from the amendment application and the CAPTCHA, choose your member type and click Validate, then click Get OTP.
Non-resident promoter hone par OTP ke liye kaunsa promoter select karein?
Non-resident promoter ya partner OTP verification ke liye select nahi ho sakta, uska checkbox disabled rehta hai. Primary Authorised Signatory ke saath koi dusra promoter ya partner chuniye.
Is there a time limit to file a GST registration amendment, and does a trade name change need verification?
The GST portal manuals do not state a deadline for filing an amendment, so confirm it in the CGST Rules or with a GST professional. The manual treats only Principal Place of Business as a core field; it does not say whether a trade name change leads to physical verification.
How can I check my GST amendment application status online?
Open Dashboard, Services, User Services, My Saved Applications, then click the i icon next to the application to see the status and its meaning.
Sources
- GST Portal manual: Amendment of Non-Core Fields (FAQ on OTP verification within 3 days) (checked 2026-11)
- GST Portal manual: Amendment of Core Fields (checked 2026-11)
Rules and limits change. Always check the latest official notification or portal before you submit a form.