In Self-Match Prevention, how is the oldest executable order/quote chosen for deletion?

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Multiple Choice

In Self-Match Prevention, how is the oldest executable order/quote chosen for deletion?

Explanation:
Self-Match Prevention aims to stop a trader’s own orders from trading against their own quotes. When two executable orders or quotes could cross, the policy is to cancel the older of the two executable orders/quotes, removing the oldest one from the order book. This keeps the newer order in place and prevents a self-trade scenario. The “older” is determined by the time the orders were entered (timestamp) with standard tie-break rules applied. It isn’t based on size, and it doesn’t cancel both.

Self-Match Prevention aims to stop a trader’s own orders from trading against their own quotes. When two executable orders or quotes could cross, the policy is to cancel the older of the two executable orders/quotes, removing the oldest one from the order book. This keeps the newer order in place and prevents a self-trade scenario. The “older” is determined by the time the orders were entered (timestamp) with standard tie-break rules applied. It isn’t based on size, and it doesn’t cancel both.

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