I have followed instructions from this link :
How to Query a Data Extension and Update the Subscriber list at the Child Business Unit Level?
Our current configuration allows existing users to update their email address. This page is hosted on a e commerce engine - Hybris Issue is that when this is updated , it is not updated in SFMC, hence all they do not receive future communication.
Issue is that the final step, import activity keeps failing (csv import). Here is a screen shot of the error log:
I will appreciate any help in solving this.
EDIT
I ran the first iteration and it worked. However we I tried to combine all five steps into a automation, it failed.
What I do know is that those are the values for my subscriber key, which I have manually mapped. I have checked the file on the FTP and it contains these values.