The most common reason for this is that there are incorrect email addresses or phone numbers in the Excel file. Another possible reason is an extra space at the end of the data.
If the above-mentioned points are in order and no errors have been found, check the following steps.
Sometimes duplicates may appear in Excel, meaning the same contact information can be listed twice. Because of this, Zeffi may report that fewer contacts have been transferred than are present in Excel.
If some contacts in Excel have only a phone number and others have only an email address, follow these steps: After importing the contact list to a new list for the first time and checking for duplicates based on email addresses, import the same list again to the same list, but the second time, check for duplicates based on phone numbers.
When importing contacts, use the Check tab, where you will find the option Check for Duplicates. During the first import, select to check for duplicates based on email addresses, and during the second import, switch to check based on phone numbers. After this, the system will update all contact information, even if not all contacts have the same details.