public async Task ChangeAsync(string orderId, [FromBody] OrderChangeRequest request) { if (!_ordersCache.TryGetOrderById(orderId, out var order)) { throw new InvalidOperationException("Order not found"); } ValidationHelper.ValidateAccountId(order, request.AccountId); var originator = GetOriginator(request.Originator); await _tradingEngine.ChangeOrderAsync(order.Id, request.Price, originator, request.AdditionalInfo, request.ForceOpen); _operationsLogService.AddLog("action order.changeLimits", order.AccountId, new { orderId = orderId, request = request.ToJson() }.ToJson(), ""); }