Exchange Lot-Size Rules and Rejected Cryptocurrency Sell Orders

Summary

This forum post reports a rejected Bitcoin sell order on an OKCoin futures account. The submitted quantity was 5.99 BTC, and the exchange response said that the order quantity must be a multiple of the lot size. The accompanying logs show the displayed available balance, prices, and attempted sale, while the trader asks why an account holding that quantity cannot sell it as entered.

The central operational lesson is that an available balance does not guarantee that the same quantity is valid for an order: an exchange can require quantities to conform to its market lot increment. The post contains no reply or confirmed fix, and it does not specify the applicable lot increment or whether other order constraints mattered. Traders should therefore consult the instrument’s contract specifications and check order quantity precision before submission; the example does not establish a general rule for other venues or contracts.

Key ideas

• The exchange rejected a 5.99 BTC sell order with a message about lot-size multiples.
• A reported available balance does not by itself establish that an order quantity meets contract rules.
• Order quantity precision and valid increments depend on the listed instrument and venue.
• The post gives no confirmed resolution or specific lot increment.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.