2015 Document 6209 is a reference guide which contains ADP and IDRS data relative to various components of the IRS. It is updated annually. IndexPDF Section 1, GlossaryPDF Section 2, Tax Returns and FormsPDF Section 3, Tax Return InformationPDF Section 4, Document Locator NumberPDF Section 5, Debtor Master FilePDF Section 6, Initiating and Monitoring Refund Check Tracing ActionPDF Section 7, Automated Non-Master FilePDF Section 8A, Master File CodesPDF - Transaction, MF and IDRS Collection Status, Freeze and IDRS Status 48, Restrictive and Filing Requirement Section 8B, Master File CodesPDF - Unpostable and Resequence Section 8C, Master File CodesPDF - Source, Reason, Hold, Priority, Item Adjustment & Credit Reference, NMF Abstract, Underreporter Process, No Merge Reason, EP Merge Fail Reason, TC 971 Action, Master File, and IDRS Location Section 9, Notices and Notice Codes Section 10, Penalty and Interest ProvisionsPDF Section 11, CollectionPDF Section 12, ExaminationPDF Section 13, Appeals and TE/GEPDF Section 14, Integrated Data Retrieval System (IDRS)PDF Section, 15, Other Systems CADE, CADE2, SCRIPTS, CFOL and FTDPDF Section 16, Julian Date, Cycle and Notice Calendars AppendixPDF
