Some of my contacts have multiple points of contact. A friend and I were trying to get to the bottom of why some messages didn't appear on his ipad, and some didn't appear on my mac. We both have iphones.
On my mac, I swtiched a conversation from phone number to email address, and the text message one had this one word in caps, surrounded by double tildes
The phone number also only shows up as a phone number, but the email address shows up as his name. Both the email and the phone are part of his contacts.
A google of imessage iphone and multilateral gives no joy.
What does multilateral mean in this context?