ImportDefinitionUpdateType

The ImportDefinitionUpdateType object defines how the import definition handles new and existing data during the import process.

NameData TypeDescription
AddAndDoNotUpdateEnumerationIgnores existing subscribers and only adds new subscribers. This property applies to both subscriber lists and data extensions. It corresponds to the Add Only option.
AddAndUpdateEnumerationAdds new subscribers and updates existing subscribers. his property applies to both subscriber lists and data extensions. It corresponds to the Add and Update option.
ColumnBasedEnumerationIndicates that information in the import is updated based on columns.
MergeEnumerationReserved for future use.
OverwriteEnumerationIndicates that imported information overwrites existing data. This property applies to data extensions, and it can be used only if no primary key is available.
UpdateButDoNotAddEnumerationIndicates that any existing values are updated, but no new values can be entered. This property applies to both subscriber lists and data extensions. It corresponds to the Update Only option.