Hello Sara,
I’ve had sometimes sth. similar and in one project it took a lot of debugging to figure out the issue.
alt_address_street_2 and primary_address_street_3:
Do you have these columns in your CSV file?
Do you have them mapped in the import wizard?
Are any of them required fields in your CRM?
event_invite_id:
You’ve got a related event to the contact there?
That’s correct and you can see this event field inside the contact when you create a contact manually?
In general:
Can you create one contact manually, export it, update one field and re-import again?
How many records do you have in your file?
Can you break the file down in multiple smaller CSV files?
Do you have a , or ; separated list?
Do the value fields contain , or ;?
Are there line breaks in the values / multi line fields with values in your CSV?
Are there hidden / special character in your CSV?
Is the CSV UTF-8 encoded?
If you open your CSV file in Notepad++ or similar, does it all look good and smooth?
Can you reduce the columns of your import (if there are empty columns, remove them from your CSV)?
It’s probably not the problem, but:
Data migrations can be incredibly complex for being a simple import.
Try to approach the whole topic with smaller chunks first (a few lines, bare minimum of columns).