Mexico CSF Posting AR Invoice Error

Hello Folks,

I am starting the hunt to resolve an issue that we receive when attempting to post an AR Invoice in a newly created Company that is set for Mexcio CSF. Forgive me as this is all very new on our side…

When we post an Invoice Group in AR (single invoice in the group) we receive the following error:

Program Ice.Services.Lib.RunTask raised an unexpected exception with the following message: RunTask: The request was aborted: Could not create SSL/TLS secure channel.

Any thoughts on where to start for a resolution here (10.2.300.3)?
Any help is much appreciated.
JM