I get this message in Trados studio when I merge segments after the segments are pre-translated using Google Translate. What am I doing wrong?

I get this message in Trados studio when I merge segments after the segments are pre-translated using Google Translate. What am I doing wrong?
Hello Ganerdene Gantumur ,
Please check if the resolution of this article can help you:
Ana-Maria Matefi | RWS Group
_____
Design your own training!
You've done the courses and still need to go a little further, or still not clear?
Tell us what you need in our Community Solutions Hub