Zerodha Order rejection

Exchange mass cancel reason

From WebNotes, a public knowledge base. Last updated 20 May 2026. Reading time ~2 min.

When Kite shows “exchange mass cancel” as an order rejection reason, the exchange has cancelled multiple orders due to specific operational or market conditions.

Common triggers

Pre-open session matching: Some pre-open orders may be cancelled if they’re outside the indicative price range.
Circuit breaker activation: Index-level circuit halts can cancel pending orders.
System maintenance window: Planned exchange downtime cancels open orders.
Trading halt: Specific scrip suspended; pending orders on it are cancelled.
Operational issues at the exchange: Rare; may cancel a batch of orders for risk management.

What happens

When mass cancel applies:

Affected orders show “cancelled” status in Orders tab.
Reason field shows “exchange mass cancel” or similar.
No execution occurs.
Margin / funds reserved for the order are released.

Action

For an affected user:

Check Orders tab for cancellation reason.
If you still want the position, place a new order.
Verify pricing / market conditions before resubmitting.

When this is common

Pre-open session end (some orders cancel as indicative match concludes).
Market-wide circuit triggers (rare but happen on high-volatility days).
Maintenance windows (typically announced in advance).
System outages (very rare).

External references

References

Zerodha Support, Order rejection reasons, support.zerodha.com.
NSE India, Order management framework, nseindia.com.

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The WebNotes Editorial Team covers Indian capital markets, payments infrastructure and retail investor procedures. Every article is fact-checked against primary sources, principally SEBI circulars and master directions, NPCI specifications and the official support documentation published by the intermediary in question. Drafts go through a second-pair-of-eyes review and a separate compliance read before publication, and revisions are tracked against the SEBI and NPCI rule changes referenced in the methodology section.

Last reviewed: 20 May 2026
Conflicts of interest: WebNotes is independent. No relationship with any broker, registrar or bank named in this article.