Order rejected: rule or fault? in TradeLocker

What is causing it

On a prop account the usual reason is a rule, not a bug. The firm's risk settings reject anything that would break a limit, before the order goes anywhere.

Why this happens

The firm's risk layer evaluates each order against your account's limits before it is routed. Failing that check produces an instant refusal with no market involvement, which is why it feels like a technical error. The distinguishing feature is that it is perfectly repeatable and usually one-sided, blocking new risk while still allowing you to reduce it.

Real technical faults are intermittent, tend to break closing as well as opening, and normally arrive alongside stale prices or a connection warning.

The fix, step by step

1. Try closing or reducing an open position. If closing works and only opening is refused, you are looking at a rule.
2. Check the dashboard for remaining daily loss, remaining drawdown, maximum size and any limit on the number of open positions.
3. Check the time against the firm's restrictions on news events, the weekend close and permitted trading hours.
4. Try a much smaller size. If small is accepted and large is not, it is a size or exposure cap.
5. Try another instrument. If others fill, the problem is that instrument being restricted or outside its session.
6. Suspect a fault only when prices are stale, a connection warning is showing, or closing fails too. Then reload and check the firm's status updates.
7. Ask the firm which rule fired, giving them the account number and the time, since they can see the reason and you cannot.

How to confirm it is fixed

The same order is accepted once the limiting condition changes, such as after the daily reset or at a smaller size, with nothing else altered.

Stopping it happening again

Keep the rule sheet and the dashboard beside the platform, and size trades so ordinary variance never reaches a limit.