The WT Sim error "Order rejected - Sub-Penny rule" indicates you are not allowed to place an order that is a fraction of a penny, and it needs to be rounded up or down to the nearest cent.
This normally happens when placing an order from the average entry price order type.
To fix this:
- Go to your main tool bar.
- Click View.
- Click Settings.
- Go to the Miscellaneous tab.
- Select Adjust order price to comply to sub penny rule.
