You can use the environment variable to iterate over the segments in an incoming HL7 message. To do this, use the input_segment_iterator() function. This function returns a segment iterator object that controls the iteration process.

For more details on the segment iterator object, see Segment Iterator Object.

	input_segment_iterator() can be used in transformation scripts only. It cannot be used when parsing or generating HL7 messages, or in Global Inbound Scripts.

To view a script that uses input_segment_iterator(), see the Data Scrubbing example.