I received this system message when logging into my Sierra Chart the past few days. With the help of Matt at Optimus Futures I am migrating over to Sierra Chart's new service with TT. I can update my experience, as it unfolds.

I am getting help from the folk at Optimus. My impression is that this new TT solution is the direction that Sierra's development team are leading most if not all Sierra Chart users.

https://community.optimusfutures.com/t/sierra-ending-cts-connection-on-may-31-2019/2608

SimonC 

I am getting help from the folk at Optimus. My impression is that this new TT solution is the direction that Sierra's development team are leading most if not all Sierra Chart users. https://community.optimusfutures.com/t/sierra-ending-cts-connection-on-may-31-2019/2608

Good. I've gotten the same, and there was a recent set of posts in one of the TST threads about problems a Topstep Combine user was having with CTS (

Topstep's Nick Dolby (Social Media and Community Coordinator) - Ask me Anything (AMA) Hello Michael, I started the trading combine for my very first time this past Tuesday using the Sierra Chart platform. When one selects Sierra Chart as their platform of choice when initially setting up the Combine, TST provides account details for …

. TST resolved the issue by moving their user to Rithmic, by the way.) There are some links in that post pointing to the Sierra Chart support board that indicates SC is divorcing from CTS, basically, and not just for T Notes.

For instance:

https://www.sierrachart.com/SupportBoard.php?ThreadID=40473

Anyone using SC with CTS should take note.

Kudos for @mattz's crew for providing help here.

Bob.

it seems like CTS could be supported after May 31st

Quoting 

Also, the CTS low-cost connection model service is not necessarily going to be discontinued at May 31, 2019 if users still need to rely on it. We will keep it up as long as it is needed.

https://www.sierrachart.com/SupportBoard.php?ThreadID=41693

I haven't kept up on this, but it is interesting to me as an SC user who often goes into a TST Combine, which in the past has meant that you could only use CTS. It alarmed me to read, in other threads, of supposed issues with CTS making SC want to walk away from them.

I checked the TST website yesterday, and TST now connects SC users to Righmic. No mention of CTS. I'm not certain when this happened, but there have been intimations of it for some time.

In the post cited above by @VincentVega, the SC user they were replying to uses Cunningham to clear, which is the "C" in CTS, so he/she probably doesn't have a lot of choice. I'm assuming that SC will continue to make the CTS connection available when their customers need or want it.

This makes sense, and it lets everybody else move on.

Bob.