Hello @Marketing VDK,
Thanks for sharing your question with the Klaviyo Community!
That’s a really interesting error you are seeing as it does appear the .CSV example you provided does seem to have all the required columns needed to import the list into Klaviyo with SMS consent.
From my experience, this may sometimes be caused by having blank columns within your .CSV you are importing. I’ve seen this happen if you’ve copied and pasted this data from a different source and some latent formatting has been brought over including those blank column/fields. To resolve this, I would suggest copy and pasting the data into a new .CSV file while pasting the data without any formatting.
Another common mistake I’ve seen occur when importing lists to Klaviyo is inappropriately mapping the data which would throw a variety of errors. @retention has a great write up explaining data mapping when importing a .CSV in the Community post below:
In addition, I’ve included some other Community posts below that may be able further help you import a list:
I hope this helps!
David
I can confirm that copy and paste without formatting to a new CSV resolves this issue.