Depends on situation:
If you have scattered targets, you can be sure you have the right target, by comparing the surrounding of where the target is.
In a combat rich environment where you have more target close to each other, you can't be sure. More than that, the mav won't lock the target you chose in TGP, but the one that stands out for the seeker. To be sure that it is the right target, you can only get close enough for identification.