When you import an IDoc definition, the Designer connects to the SAP system and imports the metadata for IDocs from the EDIDC or EDIDD structures in the SAP system. During import, the Designer displays a list of basic IDocs. You can expand each IDoc to view a list of segments.

You can import an entire IDoc or an individual segment of an IDoc. When you import an entire IDoc, the Designer imports every segment in the IDoc. After you import an entire IDoc, each segment in the IDoc is independent of the other segments in the IDoc.