A serial or vehicle identification number, HUD certification label, and data plate are related records, but they are not interchangeable. Multi-section homes can add several labels and serial references.
Short answer: Create one identification register for the exact home and every transportable section. Record the manufacturer, model, manufacture date, section count, serial or vehicle identification information shown on available title or chassis records, the exterior HUD certification-label number for each section, and the interior data-plate information and location. Then compare those entries with the title or real-property record, sales documents, installation manual, prior permits, tax record, appraisal or lender request, and current home. Do not publish the identifiers or guess at a missing number. HUD states that it does not reissue missing certification labels; its official label-verification page identifies the verification-letter path and explains that HUD does not issue vehicle identification numbers. The responsible title, local, lender, insurer, appraiser, state, or federal source still decides which record it requires.