Overview
Every order placed via the API — the same as one placed manually — passes through Shoonya's RMS before reaching the exchange. RMS checks margin availability, position limits, and price sanity (circuit bands) in real time. A rejected order most often means an RMS check failed, not an API-level error.
Common rejection reasons
| Reason | Typical cause |
|---|
| Insufficient margin | Available funds/margin don't cover the order at current pricing. |
| Price out of circuit band | Limit price is outside the exchange-permitted range for the instrument. |
| Exposure limit breached | Order would push net exposure past your account's configured RMS limit. |
| Square-off window | Intraday product order placed outside permitted market hours for that product type. |
Best practices
- Don't treat server-side RMS as your only safeguard — enforce your own pre-trade checks (max order size, max daily loss) in your strategy code so failures are caught before they even reach the API.
- Check Funds & Limits before sizing an order rather than discovering insufficient margin via a rejection.
- Always branch on
stat and read emsg from Place Order's response — don't assume a rejection is a bug in your code before checking the reason.
Notes
RMS limits are configured per account and can be adjusted by request — contact your relationship desk if your strategy's legitimate exposure needs exceed the defaults.
Overview
Every order placed via the API — the same as one placed manually — passes through Shoonya's RMS before reaching the exchange. RMS checks margin availability, position limits, and price sanity (circuit bands) in real time. A rejected order most often means an RMS check failed, not an API-level error.
Common rejection reasons
Best practices
statand reademsgfrom Place Order's response — don't assume a rejection is a bug in your code before checking the reason.Notes
RMS limits are configured per account and can be adjusted by request — contact your relationship desk if your strategy's legitimate exposure needs exceed the defaults.