CSV format documentation headers: "customerName";"customerType";"countryCode";"referenceId";"referenceIdType";"ownReference";"birthDate" customerName: 1-200 characters. If customerType is "PERSONAL", customerName must contain at least first and last name customerType: "PERSONAL" or "BUSINESS" countryCode: ISO 3166-1 alpha-2 country countryCode referenceId: Id number (1-20 characters [0-9A-Z]) - "DANISHCPR" must be 10 digits and valid, "DANISHCVR" must be 8 digits referenceIdType: "DANISHCPR", "DANISHCVR", "VAT", "TIN", "OTHER" - use "OTHER" if none of the other options apply ownReference: Reference that identifies the client in your system (e.g. customer number) birthDate: Date of birth of personal clients in ISO-format YYYY-MM-DD - should be empty if customerType is not "PERSONAL" Example: "customerName";"customerType";"countryCode";"referenceId";"referenceIdType";"ownReference";"birthDate" "Danske Bank A/S";"BUSINESS";"DK";"61126228";"DANISHCVR";"12345";"" "REMA 1000 DANMARK A/S";"BUSINESS";"DK";"17741519";"DANISHCVR";"23411";"" "Jens Hansen";"PERSONAL";"DK";"0205671111";"DANISHCPR";"12311";"1967-05-02" "James Johnson";"PERSONAL";"US";"SSN: 324-34-2345";"OTHER";"12311";"1923-03-25" "Roskilde Rejse";"BUSINESS";"DK";"71284792";"DANISHCVR";"43253";"" "BASF Digital Solutions GmbH";"BUSINESS";"DE";"HRB3541";"VAT";"43253";"" Note: The file should be in plain text format (utf-8) editing/verification should be done in a text editor. Not in Excel or Word