Create order

Turns a quote into an order and returns the deposit instructions.

What to do with the response

Send exactly paymentAmount of the source asset to paymentAddress (and include paymentExtraId as memo/tag when present) before expiresAt. Sending a different amount, a different asset, or after expiry is handled by the rules shown on the order page and may require a refund via refundAddress.

Notes

• Orders belong to the API key's owner and appear in that account's order list.
• Address and memo validation errors return 400 CASH_ORDER_RECEIVING_ADDRESS_INVALID / CASH_QUOTE_EXTRA_FIELDS_INVALID; an expired or already-used quoteId returns 409 CASH_QUOTE_EXPIRED / CASH_QUOTE_ALREADY_USED.
• Same contract as the website's POST /cash/v1/orders.
• Pair assertion (`expected`): send the pair and amount your customer confirmed. Any difference from the quote returns 409 CASH_ORDER_EXPECTATION_MISMATCH with error.details.mismatches listing only the field names (e.g. ["fromNetwork"]). Nothing is created in that case: no order, no provider order, and the quote stays usable, so fix the mismatch or request a new quote and confirm again, then retry with a new (the 409 is stored under the original key). A malformed (missing or extra field, non-string or non-positive ) returns with . Omitting keeps the previous behaviour. Live and sandbox () keys behave the same.