I accidentally reported my.friends please don't ban them

A report in game, will be handled by the developers of that game.

If you reported the individual via the Xbox report function and evidence is found of him breaking Xbox TOS, the ban will be unavoidable.

I was in a party and i was trying to report someone but accidentally reported my friend and his is communication banned can you please unban him? His username is [mod removed]

i accidentally reported my post no ban pls

If you accidentally found a glitch you won't be banned, however if you choose to exploit it you may be reported for cheating. It's best if you avoid them in the future, if possible find the forums for the developer that makes the game and report the problem
in hopes of getting it fixed.

Don't worry about other players threatening to have you banned, they have no authority in such issues and are just talking big because they are angry. If they message you and persist with harassment, feel free to block communications with them.

there is no accidentally reporting, he pressed y, then chose the reason and so on. perma bans are perma.