Nov 20 2020
Anyone know what causes this error? Pretty useless message as usual because it doesn't tell you if it saved or not or how to resolve.
Dec 29 2020
Do you still see this error? I guess it would be something with the format of the number (maybe if you copied and pasted) or that it was a temporary error. Could you try in the web application https://teams.microsoft.com if you still see this error.