Based on my test, Neither Power BI desktop nor the REST API server(400 in my test) can recognize that format datetime string.
A formated string as "2016-09-26 20:14:26" should work.
Based on my test, Neither Power BI desktop nor the REST API server(400 in my test) can recognize that format datetime string.
A formated string as "2016-09-26 20:14:26" should work.