There's a third option - where the timestamps are optional.  Will you confirm that 'ts' should be sent and 't' not sent when timestamps are optional?

My follow up question included both the 'ts' and 't' parameters.Thank you for providing the information about 'ts'.  It looks like we can send in seconds, and we'll continue to do so.It wasn't clear whether timestamp support also had an impact on whether the 't' parameter should be sent or not.I've ...

A few things:1) The data insertion API doc isn't clear about the 't' vs. 'ts' parameter.  Is the 'ts' parameter in milliseconds or seconds?  If the timestamp option is disabled, should neither be set?2) I'm sending in mobile device info as a context variable (e.g.: c.a.CarrierName=AT%26T) but I'm no...

I'd like to use HTTP GET for the Data Insertion API.Will you provide a link to the complete list of variables and query string parameters?  I don't have access or dont' see it in 'Help > Documentation in Marketing Cloud'Or is the "Supported XML Tags and Query Variables" section of the data insertion...