RebYidd23- I could see how there would be individual situations in which a person would know that you’re lying for the sake of shalom. Generally, if done right, the person will not know.
This is one of the situations about which the ???? says “????? ???? ?????” – use your common sense to know if it’s the right thing to do or not.
Unfortunately, there are always going to be people who use ????? and ????? to their own ends. That being said, there really are situations that come up in everyday life which require lying (or omitting some of the truth) for the sake of ????.