Irreversible Delivery-out

NSDL can generate ordinary delivery-out instructions on its own. This is called Auto Delivery-out, and it works for an authorised clearing member. But not every delivery-out is ordinary. Some are given for one specific job: a margin payment, or a margin exemption claim. These are never auto-generated.

The workbook calls this manual instruction an Irreversible Delivery-out (IDO). The clearing member must always submit it itself. It must also be sequenced with care if an Auto DO already exists for the same securities.

From Chapter 8, section 8.3.1: Auto DOs are not generated for IDOs "required to be given for the purpose of margin payment/exemption, etc." — the clearing member must give a Delivery-out Instruction form to its Participant as usual.

Sequencing rules:

• If the IDO is given before the Auto DO is generated, the clearing member must ensure a subsequent instruction cancels the corresponding Auto DO, along with a fresh Delivery-out Instruction for the balance quantity.
• If the IDO is given after the Auto DO is generated, the Auto DO must first be cancelled before the IDO can execute, and a Delivery-out Instruction for the balance quantity must also be given.

This is an NSDL-only concept, tied to NSDL's Auto Delivery-out facility, which CDSL does not offer.

Suvidha Securities, an authorised clearing member, has a net delivery obligation of 2,000 shares worth Rs 9,60,000 for the day, which NSDL's Clearing Corporation would ordinarily auto-generate as a delivery-out instruction.

Suvidha separately needs an Irreversible Delivery-out of 500 of those shares for a margin exemption, and submits that IDO before the day's Auto DO is generated. To avoid double-counting the same 500 shares, Suvidha must ensure the Auto DO is cancelled and replaced with a fresh Delivery-out Instruction for the remaining 1,500 shares only.

Had Suvidha instead submitted the IDO after NSDL had already generated the Auto DO for the full 2,000 shares, it would have had to cancel the Auto DO first, then execute the IDO, then give a fresh instruction for the balance 1,500 shares — the opposite order of steps for the same net result.

Chapter 8, section 8.3.1, lists IDOs as one of two specific exceptions where Auto DO is never generated (the other being a CM Settlement Account shift). Expect the sequencing rule — cancel-then-instruct, in the correct order depending on which instruction came first — tested directly.

• IDOs are always manual — never auto-generated, regardless of whether the clearing member is otherwise authorised for Auto DO.
• The cancellation sequence depends on which instruction came first — IDO-before-Auto-DO needs the Auto DO cancelled afterward; IDO-after-Auto-DO needs the Auto DO cancelled first.
• This is an NSDL-only concept tied to the NSDL-only Auto Delivery-out facility.
• Do not confuse IDO with auto pay-in, a separate, later step in the settlement chain governing how already-delivered securities are considered for pay-in.