This Directory definition message (DIRDEF) permits the transferof the contents of a UN/EDIFACT or American National StandardsInstitute (ANSI) Accredited Standards Committee (ASC) X12Directory set or parts thereof.
Sources
Accredited Standards Committee X12. ASC X12 Standard [Table Data]. Data Interchange Standards Association, Inc., Falls Church, VA. http://www.x12.org
Keep a list of all X12 EDI transaction sets at hand.