Thanks for sharing those screenshots! It looks like the request is configured properly. Did you receive any errors when you sent the request to TS?
Thanks for your reply. No errors, everything seem to be correct , however order doesn’t go through.
FYI per Tradestation API support:
I have tried various tools and programming languages using the payload provided and have been unable to replicate the behavior you’re encountering. Are you able to make the POST request through an alternative source, such as cURL, Postman, Python, JavaScript, Node.js, C#, etc.? This will help signify if the behavior is limited to the tool you are using.
@Ayana_Usui @Emory_Stainbrook @daniel
I figured it out finally! so it was about the json formatting into a table. The Timeinforce/ duration had to be formatted like this
Now I’ll be buying a plan 
great product