DUNS Data Universal Numbering System (Dun & Bradstreet)
DFAS Defense Federal Acquisition Regulation Supplement
DLIS Defense Logistics Information Service
DMT Dot Matrix Tracking
DPM Direct Part Marking
DPMI Direct Part Marking Identification
ECC Error Correction Codes or Error Check and Correction. There are several ECC levels for the Data Matrix code however ECC 200 is the preferred level.