What does the "2 arrows inside a broken triangle" notification icon mean on Samsung devices? Since yesterday, I am seeing the below icon on my Samsung Galaxy M30s that looks like 2 arrows inside a broken triangle.

I have gone through the official user manual and found nothing related to this.
What does this icon mean?
It is the data saver 
 icon - switch it off from your settings and it will vanish (Thanks to OP for the link of Data saver)

Source: Personal experience