E20 Segment Header Information

To provide for grouping the data elements by segment ID value for the electronic form of the X12 standards

Position: E20-01 · Element: 487 · Name: Maintenance Operation Code · Type: Identifier (ID) · Requirement: Mandatory · Min: 1 · Max: 1 · Repeat: 1

Code indicating the type maintenance operation

Position: E20-02 · Element: 721 · Name: Segment ID Code · Type: Identifier (ID) · Requirement: Mandatory · Min: 2 · Max: 3 · Repeat: 1

Code specifying the segment ID of the data segment in error (See Appendix A - Number 77)

Position: E20-03 · Element: 352 · Name: Description · Type: String (AN) · Requirement: Optional · Min: 1 · Max: 80 · Repeat: 1

A free-form description to clarify the related data elements and their content

E2003 contains the segment title.

Position: E20-04 · Element: 490 · Name: Note Identification Number · Type: Numeric (N0) · Requirement: Optional · Min: 1 · Max: 6 · Repeat: 1

A number providing a reference to a segment or file which contains notes or comments related to X12 standards documentation

E2004 is the note ID number of the E40 segment which contains this segment's nonstandard comments. These comments are as they appear in the transaction set listings of the standards documentation.