Error:
'The telephone number [0] contains invalid characters. A telephone number can only have numeric characters with an optional leading + symbol' when trying to edit or delete a telephone number.
This has been fixed from Mosaic 22.2.0.0
If you have a legacy telephone number which has text characters within it the system will not let you delete it.
When clicking the delete icon the system will remove it from the table, so it looks as if the delete worked.
A workaround is to edit the telephone number before deleting:
Edit the telephone number and save it.
Return back to the telephone numbers screen and delete the telephone number.
Save it again.