During list creation, Webex Interact will remove any invalid contacts from the import list which you can find in the list import summary.
For example, 44123400000 or 44123456789, are invalid as they are 11 digits each and would not make a valid phone number and hence will be removed during import.
Here is a list of contact validation criteria:
When the toggle is switched off, a number is considered valid if:
It consists of 12 digits with a correct country code, with E.164 format.
When the toggle is switched on, a number is considered valid if:
It consists of 12 digits with a valid country code and in the E.164 format.
It consists 10 digits and can be transformed into a UK number by adding the country code 44.
It contains 11 digits starting with 0 and can be converted into a UK number by adding the country code 44.