Income Tax portal - Error faced while adding Demat account in profile section

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Kalpesh Avasia

21 Points Posted on 05 June 2026

While trying to add my demat account in the profile section, I am encountering the following error

EF-WS-DMT-ERR-10002

Immediately after adding my demat account, I have received an e mail citing failure due to invalid DSC and asking me to use the registered DSC.

However, I may add that for validation, the portal does not seek either EVC or DSC (which it does for adding Bank accounts).

Replies (3)

Quick Summary

The EF-WS-DMT-ERR-10002 error while adding a Demat account on the Income Tax portal is often caused by PAN, DP ID, Client ID, email, or mobile number mismatches between Demat and tax records. It may also result from a temporary portal glitch. Revalidate details, clear browser cache, and raise a grievance if needed.

Aashok FC Advisory

Finance Compliance Consultant

789 Points Posted on 06 June 2026

The error is generally caused by a mismatch between the contact details (mobile/email) on your Demat account and those on your Income Tax profile; ensure these are identical, then use the "Re-validate" option in the "Failed Demat Accounts" tab after correcting any discrepancies.

Thinking Bridge

Practical Finance Training

252 Points Posted on 06 June 2026

The problem does not seem to be with the Demat Account but the technical glitch in the Income Tax Portal. First, check the PAN associated with your Demat account with the PAN on the e-filing portal. Other than that, make sure that you are entering the right DP ID and Client ID (NSDL) or Demat Account Number (CDSL) To validate the same, the Demat account should be active and linked with the same PAN as mentioned by the Income Tax Department.

Try the following:

> Clear browser cache/cookies and try in an Incognito window.
> Clear cookies and try using a new browser (Chrome/Edge).
> After a couple of hours, log out and log in once again.
> Verify that your mobile number and email is current with your Depository Participant (DP).

If the issue is still not resolved, raise a grievance on the Income Tax Portal, inform your broker/DP (NSDL/CDSL participant) to ensure that your PAN, DP ID and Demat information are mapped correctly in their records. The mismatches on PAN and account details, and validation error at the portal are often the cause of similar cases.

It could also be a problem with the portal temporarily as several individuals have recently reported problems with their profile being validated.

Rushabh

Automation Expert

9366 Points Posted on 13 November 2026

The error code and email indicate that the demat-account request is failing a DSC validation, despite no DSC prompt appearing in the validation flow. The facts provided do not establish whether this is a portal issue or a mismatch with the DSC registered against the profile. Check that the DSC is registered for the same user and is valid; if it is, retain the error and email and raise a portal grievance, since the demat validation flow is not presenting a way to select or use the DSC.

This sits within the profile-maintenance workflow, where demat and bank-account validations can differ. Manual follow-up across portal steps and email alerts is difficult; automation can reduce repetitive work while keeping professional judgment in control. Our platform offers 2,000+ AI agents and 650+ integrations across workflows relevant to compliance, accounting and practice operations. To discuss a fit for your workflow, message us on WhatsApp at https://wa.me/message/3HVOZ7HIY4ESC1.