Home/Learn/GST Glossary/Document Identification Number (DIN)Back to glossary A–ZLetter DDocument Identification Number (DIN)Unique number assigned to official GST communications.Related termsDebit NoteDeemed SupplyDemand NoticeAdditional Place of BusinessAdvance RulingAggregate TurnoverApplication Reference Number (ARN)AssessmentFull GST glossaryFree GST tools