The ImportDefinitionFieldMappingType object defines how fields in an import file are mapped to fields in a data extension.
|InferFromColumnHeadings||Enumeration||Indicates system matches field headings in import file to data extension fields as accurately as possible based on similarities in text and values.|
|ManualMap||Enumeration||Indicates that all relationships between fields in an import file and a data extension are explicitly stated in the API call.|
|MapByOrdinal||Enumeration||Indicates fields are mapped from an import field to a data extension by their ordinal position in the file. Use a 0-based ordinal when importing to a subscriber list, and use a 1-based ordinal when importing to a data extension.|