NISM Certifications · NISM-Series-VI: Depository Operations

Functions of Depository Participant - Dematerialisation: formula sheet

Full chapter guide

Key formulas

Core definition: Physical certificate → cancelled → electronic balance in demat account; The security does not change. Only its form changes.
Process flow order: Investor → DP → Depository (online request) → RTA/Issuer (verification and confirmation to the depository) → Depository credits the investor's demat account (held through the DP); Remember that the DP sends the request online to the depository and the papers physically to the RTA. The RTA confirms to the depository, which then credits the account.
Ownership after demat: Registered owner = Depository; Beneficial owner = Investor; The investor keeps all rights, such as dividend and voting, as beneficial owner.
Name matching rule: Names and order on certificates = names and order in demat account; A mismatch leads to rejection of the request.
Cancellation of certificates: DP marks certificates "Surrendered for Dematerialisation" → after confirmation, issuer/RTA mutilates and cancels them; Once the securities are credited, the certificates have no further use.
Who requests: Investor → DP (with DRF) → depository system → issuer/RTA → confirmation → credit; The investor deals only with the DP, never directly with the depository or issuer for demat.
Mark on certificates: 'Surrendered for Dematerialisation'; The DP marks this on each certificate before forwarding. It prevents the certificate from being transferred or reused.
One DRF per ISIN: One DRF ↔ one ISIN (security); Different securities need separate forms. Many certificates of the same ISIN can go on one DRF.
Name matching: Names and order on certificates = names and order on demat account; Joint holders must appear in the same order. A mismatch makes the request unacceptable.
Acknowledgement: DP gives the investor an acknowledged copy of the DRF; This is the investor's proof that the DP received the request and certificates.
Order of DP actions: Verify client and documents → enter request in the depository system to get the DRN → give the client the acknowledgement → mutilate and deface certificates → forward the DRF and certificates to the issuer/RTA; Sequence is a likely area for questions. Verification comes first. The request is entered and the DRN generated before the certificates are stamped and forwarded. The client's acknowledgement is given when the request is accepted and the DRN is generated, not at the end.
DRN: DRN = unique number generated for each demat request in the depository system; It identifies one request. It is not the same as the client ID or the ISIN.
Mutilation and defacing: Mutilate (cut/punch) + deface (mark "Surrendered for dematerialisation"); Done by the DP after the request is entered, so a certificate cannot be reused.
Who confirms the credit: Issuer/RTA confirms in the depository system → depository credits the account; The DP does not confirm the request or credit the account itself. It submits and forwards the request and monitors its status. If the request is rejected, the RTA returns the documents to the DP, and the DP returns them to the client with the reason.
Meaning of remat: Electronic holding in demat account → physical certificates; It is the reverse of dematerialisation. The investor becomes the registered owner again.
Request document: Remat Request Form (RRF) submitted to the DP; The beneficial owner makes the request. The DP does not start it on its own.
Process chain: Investor → DP → Depository → Issuer/RTA → certificates to investor; The DP blocks the quantity first. After confirmation, the balance is debited from the account.
Balance eligibility: Quantity requested ≤ free balance; Pledged, frozen, locked-in or otherwise restricted securities cannot be rematerialised until released.
Issuer timeline: Certificates to be issued within 30 days of the issuer receiving the intimation; The Depositories Act sets this outer limit for the issuer.
Ownership change: Demat: depository = registered owner, investor = beneficial owner. Remat: investor = registered owner; A very common one-line test.
Partial remat: Investor may rematerialise part of a holding; Only the requested quantity is blocked and debited. The rest stays in demat.

Quick revision

Dematerialisation converts physical securities into electronic form in a depository account.
The investor deals with the DP. The DP is the depository's agent for this purpose.
The investor must hold an account with the DP before submitting a demat request.
A Demat Request Form accompanies the physical certificates submitted to the DP.
The DP checks the form and certificates before sending the request onward.
The issuer or its RTA confirms the request to the depository after processing it.
The depository credits the investor's account only after the issuer or RTA confirms.
Know the workbook's exact timeline for processing a request, and who must meet it.
Partial demat, lock-in and transmission each follow special rules that differ from the normal flow.
Rematerialisation is the reverse process: electronic holdings are converted back to physical certificates.
Use workbook wording for conditions. Words like 'only', 'all' and 'must' often decide the answer.

Common mistakes

Saying the investor sends the certificates to the RTA directly. Fix: The investor always goes through the DP. The DP forwards the papers to the RTA.
Treating the depository as the beneficial owner. Fix: The depository is only the registered owner. The investor is the beneficial owner with all rights.
Thinking the investor sends certificates directly to the issuer or RTA. Fix: The investor always submits the DRF and certificates to the DP. Only the DP forwards them.
Treating the DP as a passive post box. Fix: The DP must verify the account, the form and certificates, and the name match before accepting.
Saying the RTA mutilates the certificates. Fix: The DP mutilates and defaces before forwarding. The RTA receives already defaced certificates.
Mixing up the DRN with the client ID or ISIN. Fix: DRN is per request. Client ID is per account. ISIN is per security.
Confusing the RRF with the DRF. Fix: Remember that D stands for demat (certificates go in) and R stands for remat (certificates come out).
Thinking pledged or frozen securities can be rematerialised. Fix: Always work with the free balance. Restricted quantity must be released first.

Exam tips

Learn the flow as a chain of parties. Many questions only test who acts at which step.
Watch for options that reverse registered owner and beneficial owner.
Questions on reasons for demat expect points like safety, speed, no stamp duty on transfer and much lower risk of loss, theft and forgery.
If an option mentions a security without an ISIN being dematerialised, it is likely wrong.
Since NISM-Series-VI has negative marking of 25% of the marks assigned to a question, skip a question you cannot place rather than guess blindly.
Questions often test who performs which step. Memorise the chain: investor, DP, issuer or RTA, depository credit.
Watch for name or order mismatch in joint holding scenarios. The correct answer usually rejects the request.
Remember the phrase 'Surrendered for Dematerialisation' and that the DP applies it.