The status of an order transaction indicates where it is in the order cycle. You can view transaction statuses within the transactions tab or the clients account page. 

Waiting - The order is awaiting linked transactions such as a payment in, transfer in or sell. 

Pending - The order has been routed to market and is awaiting executions

Completed - The order completed

Calculating - This will happen where there is a FAD gross withdrawal which has been submitted but not yet paid. 

Deleted - Order deleted due to error

Transactions will also show as linked within a 'group'. You can see more about this here