Make sense of every order.

Find the question behind your next step. Check conditions before submission and confirm status afterwards. All numerical examples are illustrative.

Price, available quantity and queue priority are three different conditions. Check which one is missing.

Use three price levels to estimate covered quantity and identify what cannot be priced from the visible book.

Separate original quantity, cumulative execution and the remainder to avoid a duplicate buy.

An order can meet the minimum value and still fail. Work through decimal examples and match the error name to the relevant input.

A triggered order still has a limit price. Check what happens when the market moves past that limit or only part of the quantity fills.

Cancellation affects only the unfilled part, and another fill may happen while the request travels.

Time in force determines how long to wait and what happens when quantity is insufficient.

An expired order may already have filled in part. Check its executed quantity, expiry reason and any other orders still open.

Connect one order ID with its execution, then check aggregated rows, dates and cancelled remainders.

Read the quote unit, calculate the gap with a stated denominator and separate current quotes from a past trade.

Find which open order reserves the balance, what has already been spent and what cancellation can release.

After a timeout, check whether the original order filled. Follow open orders, history and order IDs to avoid buying the same quantity twice.