I am trying and importing a file in a new standard list but I am unable to map by either header rows or manually since the system imports all data into one column.

The CSV file is comma delimited and contains these columns:

  • _MobileNumber
  • _LastName
  • _Email
  • _CountryCode
  • _ContactKey

Do I need to configure anything ?

  • Are these the column of the DE you are importing into?
    – 0xsegfault
    Jun 22, 2017 at 6:51

1 Answer 1


You have the right columns based on the outline here: https://help.marketingcloud.com/en/documentation/mobileconnect/contacts/import_contacts_to_a_standard_list_or_all_contacts/prepare_file_for_import/

However, if it maps it all into same row it seems that there must be an error in your source file. You should be able to select manual and then map:

  • CountryCode to Locale (believe this is the name for the column)
  • MobileNumber to MobileNumber
  • ContactKey to ContactKey

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