error_USER_NOT_MUTUAL_CONTACT

Sorry, iIf a person is no longer part of ahas left the group in the past, you need to be in their Telegram contacts to add each other to your respective contact lists to be able to add them back.

Note thatThey can still join via the group's invite link as long as they could still join viaare not on the group's invite link as long as they are not in the removed uRemoved Users list.
203
Applied
抱歉,此用户已决定退出此群组,因此您无法邀请此用户回来。
28/203
Deleted Account, Jan 27, 2019 at 04:55
Applied
抱歉,此用户已决定退出此群组,因此您无法邀请此该用户已决定退出此群组,因此您无法邀请该用户回来。
28/203
Deleted Account, Jan 19, 2019 at 13:27