where is the transaction data inside order (securepay transaction)? by Tim Richardson

Hi, I'm new to the API. We have a test store (Australia). Securepay is configured as gateway. I put Securepay into live mode, and checked out with a $10 purchase, which shows in Securepay. 

Based on the API docs, I expect to see a transaction element in the order data. I can't find one. When I do count transactions

via a GET on a:b@myshop.myshopify.com/admin/orders/transactions/count.json 

i get this response:

{"errors":"Not Found"}
 

so it seems I have no "transactions", which surprises me based on what I read in the documentation.

What am I doing wrong?