You will get this error when your order quantity is more than the Maximum allowed quantity for a single order also known as Quantity Freeze Limit.
- Please verify that you really want to enter such large quantity and it was not a typing mistake
- Use the split order feature of AutoTrader web. This will internally split your large order into multiple small quantity orders. This allows you to bypass the quantity freeze limit.
- Please see the video below to understand how it works: