Is there any reason for the translation "This is right" not be accepted?

Why is "Agreed" not an accepted translation? I've used this in context with German natives and they've never corrected it...

Exactly?

Agreed!! No?

Is not 'that makes sense' also an accurate translation?

The answers, "That's right," and, "That is correct," are fairly identical answers and both should be accepted. The latter answer is more formal and proper, however.

There are many ways to say thing in English, and some are more accurate than others. The answers," That's correct," That's true," and "That's right," should all be accepted!

Doesn't accept "that adds up"?

"this is right" is... right :)