While the recipient phone number is an optional field for the importer, it must be correctly formatted if it is to be used.
You will need to ensure that the phone numbers entered are between 8 and 30 characters long and contain only the following accepted characters:
Phone numbers for shipments destined to Canada or the U.S. must be 10 digits long.
If you would like to include an extension for the phone number, please use an 'x'. For example, 123-456-7890 x 123. This may require you to reformat your imported shipments.